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Aug 15, 2024Hang Sơn Đoòng Cave, Vietnam

In 1991, logger Hồ Khanh stumbled upon something big in what is now Vietnam"s Phong Nha-Kẻ Bàng National Park. During a jungle expedition, he found the entrance to a cave with a roaring underground river. It was later named Hang Sơn Đoòng, or "cave of the mountain river" and in 2009, the British Cave Research Association led an expedition to explore it. They realized something incredible: It was the world"s largest cave. Hang Sơn Đoòng"s main passage is 3.1 miles long, 490 feet wide, and 660 feet high. That"s tall enough to fit a 40-story skyscraper.Desktop Version

Apr 9, 2024Skagit Valley Tulip Festival

Walk through a real-life canvas where vibrant blossoms paint the Earth in the shadow of Mount Vernon. That"s exactly what awaits you at the Skagit Valley Tulip Festival in Washington. Founded in 1984 by the Mount Vernon Chamber of Commerce, it began as a three-day event but has since grown into a month-long fiesta. The festival runs from April to May and draws visitors from all over the world. The floral show spans multiple gardens in the valley, so make sure you explore Tulip Town, Tulip Valley Farms, Garden Rosalyn, and the 50-acre display at RoozenGaarde. You can tour the tulip gardens by bicycle and explore the local wineries, breweries, and restaurants. Among the petals, life slows down just enough for us to remember the simple joys—breathe deeply, smile widely, and revel in the spectacle that is the Skagit Valley Tulip Festival.Desktop Version

Jan 12, 2024Bukhansan National Park, South Korea

Just a few miles north of South Korea"s capital city of Seoul, Bukhansan National Park is a retreat for city dwellers and international visitors. Forests and ancient temples sit side-by-side in the park, beneath the three granite peaks of Bukhan Mountain, or Bukhansan. Among the park"s ridges and valleys, water deer, wild boar, chipmunks, and squirrels roam freely. A careful ear might pick out the rat-a-tat of woodpeckers or the chirpy melody of songbirds perched in the trees. The park also boasts Bukhansanseong Fortress, whose current structure was completed in 1711.Desktop Version

Jan 18, 2024Pont Alexandre III, Paris, France

The "golden hour" just before sunset is the perfect time to take in views of Paris" most ornate bridge, the Pont Alexandre III. Arching over the Seine, the bridge was opened in 1900 and named after a Russian tsar, celebrating a new alliance between the two countries. Befitting the nobility of the event, two 56-foot columns sit on each bank of the river, crowned with gilt-bronze sculptures of the winged horse Pegasus. From the center of the bridge, standing above reliefs decorated with nymphs and beneath Art Nouveau-style lamps, you can admire some famous Parisian monuments. Views include the Esplanade des Invalides, the Grand Palais and Petit Palais museums, and the Eiffel Tower.Desktop Version

Oct 3, 2022World Architecture Day

In Belgium"s largest city, the Antwerp Port Authority is housed in a century-old building that sports a gleaming new addition. The update to the building, known as the Port House, was the vision that Zaha Hadid created with her team at Zaha Hadid Architects, which won a 2009 competition to build the new structure around a 1911 firehouse. Work was completed in 2016, the same year the famed architect died. The expansion is intended to resemble the hull of a sailing ship with a protruding bow glimmering with diamonds, recalling Antwerp"s longtime trade in precious stones.Desktop Version

Jan 3, 2025Happy Birthday, J.R.R. Tolkien!

"Don"t adventures ever have an end? I suppose not. Someone else always has to carry on the story." Today, on Tolkien Day, fans around the world honor the master storyteller who crafted the epic adventures of Middle-earth: J.R.R. Tolkien. While Tolkien may have started the tale, it"s his readers who carry it forward, generation after generation, diving into the pages of "The Hobbit," "The Lord of the Rings," and beyond. Tolkienists are encouraged to celebrate the author"s birthday with a toast at 9 PM local time—to participate, all you must do is stand and raise a glass of your choice, say "The Professor," and take a sip.Desktop Version

Oct 10, 2023Mount Sopris, Colorado

The rising sun hits the twin peaks of Mount Sopris in this autumnal scene, in Colorado"s Elk Mountains, in the Rockies. Known as East Sopris and West Sopris, the two summits are both 12,965 feet in elevation, towering over the town of Carbondale, in the Roaring Fork Valley. It"s a common misconception that Mount Sopris was a volcano but, although magma built up beneath its surface, it never erupted. Instead, it crystallized about 10,000 feet beneath the Earth"s surface, creating a massive rock-covered dome. Erosion by rain, melting snow and glacial ice then shaped it into this twin-peaked giant over tens of millions of years.Desktop Version

Nov 7, 2023Kirkilai lakes, Biržai Regional Park, Lithuania

Curving above the treetops of Biržai Regional Park in northern Lithuania, this unusual structure allows a bird"s-eye view of a unique landscape. Built in 2015, the Kirkilai Observation Tower"s shape is said to resemble a sinking boat, appropriate in an area dotted with water-filled sink holes. About 30 of these small lakes can be seen from the top of the tower, nearly 100 feet in the air. These lakes can be up to 36 feet deep and are just some of the thousands of sinkholes identified in the park. Water-soluble rocks like gypsum lie under the soil in this area, and over time they gradually erode, forming caves, which then collapse. In some cases, they fill with water, creating this mesmerizing landscape. The interconnected lakes mirror the surrounding greenery, creating a scenic haven for nature enthusiasts.Desktop Version

Apr 10, 2024Siblings Day

Oh brother! April 10 is National Siblings Day, a time to celebrate the special bonds shared by brothers and sisters. From friendly rivalries to shared memories, there"s nothing quite like the relationship between siblings. Siblings Day was created by Claudia Evart in memory of her siblings Alan and Lisette. Today, it is recognized by 49 states and 14 countries. Celebrations of this day can range from something simple, like phoning your siblings to let them know you"re thinking of them, to giving gifts or sharing a meal.Desktop Version

Jul 31, 2022Noctilucent clouds

It"s around this time of year when some lucky people get to witness these rare, wondrous clouds. Known as noctilucent, or "night-shining," clouds, they"re the highest clouds in our sky and are only visible during summer. They"re made up of icy dust glowing at the edge of space, roughly 50 miles above the planet"s surface. The trick to seeing them is to gaze up into the sky at twilight, when sunlight is not reaching the Earth"s surface, but is still shining through the high-altitude noctilucent clouds. These clouds occur more often at high latitudes but have been seen lower than 50° north and south.Desktop Version

Jan 5, 2025National Bird Day

Look up at the skies and experience the magic of birds—it"s National Bird Day. Birds come in many shapes and colors, but few are as striking as the plum-headed parakeet, seen in today"s image. Native to the Indian subcontinent, these birds are known for their swift, acrobatic flight and distinctive calls that echo through the air. There have been reports of plum-headed parakeets making their way to places like New York, Florida, and even parts of the Middle East.Desktop Version

Nov 20, 2021World Children s Day

For World Children"s Day, we"re featuring an aerial view of a larger-than-life painting on the summit of the Moléson in the Swiss Prealps. The 16,000-square-foot fresco is titled "Un Nouveau Souffle" (A New Breath) and depicts a child blowing clouds toward the horizon. It was created by French-Swiss artist Saype—real name Guillaume Legros—who is known for his grassy graffiti around the world. The eco-friendly artist uses biodegradable paints made from natural pigments such as coal and chalk, so by the time you read this, his land art will have already disappeared into the soil.Desktop Version

Nov 21, 2023Gray seal pup, Norfolk, England

Here in Norfolk, on the east coast of England, a seasonal wildlife spectacle is underway. Between early November and January, thousands of gray seal pups are born on the shoreline, a little earlier than those on US coasts. The seal moms feed their pups on the beach for three weeks, during which time the pups gain about 4.5 pounds a day. They stay on the beach until they shed their pale fur to make way for a waterproof, mottled gray coat. Then it"s time to head to the sea and learn to hunt for themselves.Desktop Version

May 17, 2023Natural Bridges State Beach in Santa Cruz, California

California brown pelicans, cormorants, and gulls enjoy jostling for position on top of this stunning rock formation in Natural Bridges State Beach in Santa Cruz. It is the sole surviving natural "bridge" in this state park. Once three bridges stood side-by-side here, carved by waves into cliffs that jutted out into the Pacific. This one stood in the middle, but the outermost bridge collapsed in 1905 and the innermost one disappeared in 1980.Desktop Version

Oct 16, 2023Golden larches and Prusik Peak, the Enchantments, Washington

That jagged granite summit is Prusik Peak, an icon of Washington state"s Enchantments region, high in the Cascade Mountain range. Getting here means a long, strenuous hike, and for much of the year it is covered in snow. But from midsummer through the fall, hikers and climbers arrive here as the larch trees turn golden. The granite peaks and autumnal colors are not the only attractions. The Enchantments boasts more than 700 alpine lakes and ponds, as well as herds of grazing mountain goats that roam this corner of the scenic Alpine Lakes Wilderness.Desktop Version

Jan 13, 2023Giant kelp in the Channel Islands National Marine Sanctuary

All along the Pacific Coast of North America, giant stands of kelp up to 100 feet high, like this one in California"s Channel Islands, provide habitat for a vast number of fish, invertebrates, and sea mammals. Giant kelp, technically a type of brown algae, is the largest of all seaweed and one of the fastest-growing of any organism—as much as 2 feet per day! The gas-filled pods you see in this image help the kelp float. Like the trees in the Amazon, the kelp forests of our oceans are key to the health of marine life.Desktop Version

Aug 29, 2024Castellfollit de la Roca, Catalonia, Spain

Perched on the edge of a basalt cliff above two rivers, today"s image takes us to Castellfollit de la Roca, in the Spanish region of Catalonia. This town is not for the faint-hearted: There"s a 160-foot drop down to the Toronell and Fluvia rivers, which converge at the base of the cliff. Many of the buildings, which are made of the same basalt that the town stands on, seem to teeter on the edge of the precipice. Pictured at the end of the crag is the 13th-century church of Sant Salvador.Desktop Version

May 12, 2023Wild lupines

These stunning wild lupines bring shades of blue, pink, and purple to meadows and roadsides from early spring. They are not just a stunning addition to the landscape—they are crucial for the survival of the rare Karner blue butterfly. The larvae of the short-lived species will only feed on wild blue lupines, crawling up their stems to eat new leaves when they hatch. Once widespread across much of eastern North America, wild lupines have been in decline since the Industrial Revolution and human development has reduced their range. This has had a knock-on effect on the butterflies, which are now an endangered species. Conservation efforts have focused on replanting areas of wild blue lupines to boost butterfly numbers.Desktop Version

Jan 31, 2023Burchells zebras for International Zebra Day

It"s International Zebra Day, and we"re giving a shout-out to the flashiest animal on the African savanna. It"s a day to raise awareness of these distinctive creatures and encourage measures to protect them and their habitat. This group of Burchell"s zebras is hanging out at Rietvlei Nature Reserve in South Africa.Desktop Version

Jun 12, 2022Big Bend National Park turns 78

Join us for a hike at one of America"s least-visited national parks. Big Bend National Park may be among the country"s largest national parks with an area of over 800,000 acres (about the size of Rhode Island), but it"s also one of the most remote. Found in West Texas along the Rio Grande at the Mexico border, the park entrance is roughly a two-hour drive from the nearest interstate. The good thing is, even in a "busy" year when half a million people visit, there"s plenty of space to enjoy the great outdoors unhindered by crowds.Desktop Version

Oct 24, 2019Bridge of Hillsborough County

The Hancock-Greenfield Bridge (aka County Bridge) has offered a picturesque passage over the Contoocook River in southern New Hampshire since 1937. It was built to replace another covered bridge that had been destroyed in a flood. But why even build a covered bridge? In a word, longevity. The roof and walls help protect the timber supports from rot. For comparison, an uncovered wooden bridge lasts an average of 20 years, while the covered variety can reach 100 years or more.Desktop Version

Oct 2, 2022Albuquerque International Balloon Fiesta

October means pumpkin fields, Halloween, leaf-peeping, and the World Series. But in Albuquerque, New Mexico, the beginning of October means a skyful of hot air balloons. The 50th Albuquerque International Balloon Fiesta is the largest gathering of balloonists in the world, with more than 500 hot air balloons going aloft this week. The now nine-day event got its start by launching 13 balloons from a shopping mall parking lot in 1972 to celebrate the birthday of a local radio station. It has easily become the biggest event of the year in Albuquerque, whose entire populace can view balloons in flight simply by stepping outside their homes and looking up.Desktop Version

Dec 13, 2024Christmas market, St. Stephens Basilica, Budapest, Hungary

As the holiday season kicks off, St. Stephen"s Basilica becomes the dazzling centerpiece of one of Budapest"s iconic Christmas markets. The fair buzzes with holiday spirit, offering a mix of Hungarian craft, festive décor, and local delicacies, capturing the essence of a traditional Christmas. The Advent Feast—an event held in the weeks leading up to Christmas and part of Hungary"s holiday traditions—invites guests to savor dishes like chimney cakes, stuffed cabbage, and goulash soup, while the scent of mulled wine and roasted chestnuts fills the air. A highlight for many is the 3D light show projected onto the basilica"s facade, a modern touch that brings this historic structure to life.Desktop Version

Aug 10, 2023World Lion Day

Lions are known as "the king of the jungle," but on World Lion Day, let"s set the record straight: Lions don"t live in the jungle. Lions lounge in lordly leisure and hunt with ferocious focus on grasslands and plains. When they"re not hunting, these majestic creatures nap, wrestle, and groom each other. But in an instant, they"re chasing down a hapless gazelle or a hippopotamus that"s wandered too far from the safety of its river. Like the opening song of "The Lion King" movie says, it"s the circle of life. World Lion Day is our opportunity to (ahem) lionize these regal beasts and raise awareness of threats to their well-being like poaching, habitat destruction, and other human-lion conflicts.Desktop Version

Jul 20, 2022National Moon Day

Bigger and brighter than anything else you can see from Earth in the night sky, the moon has inspired our calendar, our songs, our art, our stories, and our dreams. Today, on National Moon Day, we remember one dream that came true on this date in 1969: the day humans first set foot on the lunar surface. So far, it"s the only place beyond our planet that humans have visited.Desktop Version

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