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Infinity Day
Infinity Day
This looping highway in Taipei bears a resemblance to the symbol of infinity—the concept of something without ends or limits that is celebrated today. Infinity Day is held on the eighth day of the eighth month, a nod to the symbol"s likeness to a sideways figure-of-eight. Established in 1987 by a New York-based philosopher, Jean-Pierre Ady Fenyo, the day celebrates freedom of thinking in its various forms, from philosophy through the arts and sciences. The symbol itself has a much longer history. English mathematician John Wallis is credited with introducing it as a mathematical symbol in 1655. The philosophical concept of infinity dates back at least as far as ancient Greece.Desktop Version
National Pearl Harbor Remembrance Day
National Pearl Harbor Remembrance Day
While most know the US entered World War II after the Japanese bombed Pearl Harbor, fewer know that the battle on December 7, 1941, actually started here on Oahu"s eastern shore at the old Kaneohe Bay Naval Air Station. Now a Marine Corps airfield, the base lies beyond the small, cone-shaped Mokoli"I Island in the background of this image.Desktop Version
Extraterrestrial Culture Day
Extraterrestrial Culture Day
Evidence of ancient aliens? Nah, more likely the etchings of a prankster hiker. Though Pueblo peoples here in northern New Mexico made pictographs in this style several centuries ago, there"s no evidence they were depicting extraterrestrials. But don"t get us wrong: We want to believe.Desktop Version
Siblings Day
Siblings Day
Make the most of this family photo—caracals tend to go solo as adults, so these cute cubs will hang out together only until they"ve honed their hunting skills from watching mom. In the meantime, we think they make ideal mascots for Siblings Day, celebrated in the US and Canada on April 10.Desktop Version
Pamukkale, Turkey
Pamukkale, Turkey
The stunning travertine terraces and hot pools of Pamukkale, Turkey, have dazzled visitors since at least the end of the 2nd century BCE, with the founding of the Greco-Roman thermal spa of Hierapolis. Since then, people have enjoyed a relaxing soak in the 97-degree Fahrenheit water, claiming curative powers for many ailments.Desktop Version
Ceremony Hall at Sweden s Icehotel
Ceremony Hall at Sweden s Icehotel
Rebuilt every winter since 1989 in the northernmost county of Sweden, the Icehotel in Jukkasjärvi is not only one of a kind each year, but the first of its kind established. Other ice hotels can now be found in Norway, Finland, Canada, Romania, and elsewhere, but this one is still the largest: The ice blocks harvested from the nearby Torne River to build the Icehotel weigh 2 tons each.Desktop Version
Horseshoe Bend, Arizona
Horseshoe Bend, Arizona
Grab your boots and gear, today we"re heading to Arizona to hike out to Horseshoe Bend. Known as the "east rim of the Grand Canyon," it"s actually about 140 miles from the other rims and is really more a part of nearby Glen Canyon. Scientifically, the beautiful view exists thanks to something called an "entrenched meander." Around 6 million years ago, the area was closer to sea level. The Colorado River, following the path of least resistance, meandered and became trapped when the Colorado Plateau uplifted around 5 million years ago. Over time, the river water cut through exposed sandstone, forming the thousand-foot-deep, 270-degree horseshoe-shaped bend.Desktop Version
Golden Gate Bridge, San Francisco
Golden Gate Bridge, San Francisco
Few structures achieve the status of the Golden Gate Bridge—so recognizable that it needs no introduction. Opened on this day in 1937, the bridge was a marvel of engineering, built to withstand ferocious winds above and swirling currents below. Its construction was embraced by the local population because it would finally connect the rising metropolis of San Francisco to communities in Marin County and all that lay north. Before the bridge was completed, a ferry was the only way across the Golden Gate, the mile-wide strait that connects the Pacific Ocean to San Francisco Bay. Building a bridge to cross the span would be no small feat, and many thought it impossible.Desktop Version
The Guggenheim turns 60
The Guggenheim turns 60
Today"s image shows the Guggenheim on the day before its grand opening, 60 years ago today. Since then, it"s become an iconic building in the New York cityscape. Housed in a white spiral building that emerges from Fifth Avenue, the museum started with several private collections, including that of founder Solomon R. Guggenheim. The collection has grown over the decades to contain some of the world’s most notable examples of impressionist, post-impressionist, early modern, and contemporary art.Desktop Version
La Rocque Harbour, Island of Jersey
La Rocque Harbour, Island of Jersey
Just off the coast of Normandy, France lies Jersey, a British island with a Norse name. Found on the southeastern shore of the island is La Rocque Harbour, home to a white, sandy beach and an elevated walkway that stretches out into the water. The shoreline"s granite and plutonic rocks, which originated more than 420 million years ago, showcase a variety of colors and textures. Visible from the harbor are the round, stubby Icho Tower and the taller Seymour Tower, built in the 18th and 19th centuries respectively as coastal defense structures. Both structures are over 1,800 feet away from the shore and can be reached on foot with a sturdy pair of shoes, but only on the days of the year where the tide is lowest.Desktop Version
Sand dunes in the Sahara, Algeria
Sand dunes in the Sahara, Algeria
The Sahara spans over 3 million square miles of North Africa, covering large parts of various countries including Algeria, Egypt, Morocco, Sudan, and Tunisia. Vast sand dunes, rocky plateaus, and occasional oases create a landscape like no other. Although it is the largest hot desert in the world, the Sahara supports drought-resistant plants like acacia and palm trees, and hardy animals such as camels and fennec foxes. Intriguing features include its shifting sand dunes, pictured in today"s image, some of which are over 500 feet high. Ancient rock art and fossils have also been discovered here, providing insights into early civilizations and prehistoric creatures. Sandstorms are common, shaping the ever-changing scenery and adding to the mystique of this natural wonder.Desktop Version
Happy Halloween!
Happy Halloween!
These mask-like monsters of the Minster wish you a hearty "Happy Halloween"! That"s York Minster, by the way, the towering medieval cathedral in the heart of York, England, decorated with these impish figures meant to scare off evil spirits. Just don"t call them gargoyles (for that title to apply, they"d need waterspouts)! Statues like these fellas bear an even more Halloween-appropriate name: grotesques.Desktop Version
Bohemian Switzerland
Bohemian Switzerland
Today we rhapsodize about the beautiful region called Bohemian Switzerland, but we"re hundreds of miles from Switzerland. The name for the area originated with Swiss painters visiting the Kingdom of Bohemia, now the western half of the Czech Republic. They were reminded of their homeland by this region"s dramatic sandstone formations. Turns out the acclaimed artist named Mother Nature finds inspiration here, too, turning the Bohemian Switzerland’s pockets of thick forest into a canvas of warm oranges and yellows every autumn.Desktop Version
Constitution Day and Citizenship Day
Constitution Day and Citizenship Day
Constitution Day and Citizenship Day is a single celebration that commemorates the formation and signing of the US Constitution while also recognizing both naturalized citizens and those born in the US. It"s a day to learn about these subjects, as well as a day many people become naturalized citizens in group ceremonies. (On average, about 700,000 people become US citizens every year.) To celebrate, we"re looking at an unusual close-up of the Statue of Liberty, a welcoming sight to immigrants and a symbol of freedom since 1886. The statue"s tablet has the date of the signing of the Declaration of Independence (July 4, 1776) inscribed in Roman numerals: JULY IV MDCCLXXVI.Desktop Version
World Turtle Day
World Turtle Day
With distinctive markings on their shells, western box turtles, such as the one seen here, are among the most widely recognized turtle species and one of two box turtle species in the US. Box turtles are named after their dome-shaped shells which are hinged at the bottom, allowing the shell to close like a box if it needs to hide from predators. They generally live for around 25 years but can survive for more than 50, and there have been reports of some living for 100 years.Desktop Version
Happy winter solstice!
Happy winter solstice!
The winter solstice is here. Today marks the shortest day in the Northern Hemisphere, while last night was the longest night of the year. This has been an important event for millennia, with evidence of celebrations going back as far as 10,000 BCE. Some of the world"s most famous Stone Age monuments, including Stonehenge, are aligned with the point that the sun rises or sets on the winter solstice. Traditionally, it was a time for feasting and lighting of fires to symbolize the darkest day of the year. Ancient Germanic tribes celebrated the winter solstice by bringing evergreens into their homes as a symbol of the returning light and the coming spring.Desktop Version
Veterans Day
Veterans Day
For Veterans Day today, we"re featuring a moment captured back in 2016 of US sailors on the amphibious assault ship USS Iwo Jima. It was Veterans Week in New York City, and the ship was sailing across the Hudson River on its way to participate in the events. Every year on November 11 we celebrate Veterans Day and honor all service members living or dead, including these sailors. There are currently around 19 million living veterans and 1.3 million active service members in the US.Desktop Version
50 years of World Heritage Sites
50 years of World Heritage Sites
At its World Heritage Convention on November 16, 1972, UNESCO adopted an international treaty that for the first time linked the concepts of nature conservation and preservation of cultural properties. The World Heritage Sites program was sparked by Egypt"s plans to construct the Aswan High Dam. UNESCO helped save thousands of antiquities that would have been lost as a result of the dam, which flooded a large swath of the Nile Valley.Desktop Version
Roman bridge of Córdoba, Spain
Roman bridge of Córdoba, Spain
The Roman bridge of Córdoba, in the ancient Spanish city’s historic center, has been rebuilt several times over the centuries. For 2,000 years it was the city’s only bridge across the Guadalquivir River, originally built in the first century BCE during the expansion of the Roman Empire. Much of the current bridge dates from reconstruction in the 8th century following the Moorish conquest, a period when hundreds of mosques and palaces were built, and Córdoba became one of Europe"s largest cities and a center of learning and culture.Desktop Version
National Take a Hike Day
National Take a Hike Day
It"s National Take a Hike Day, so what better time to lace up those boots and head out on a trail to pay homage to John Muir, the patron saint (not really) of US hiking. Muir was instrumental in persuading the government that enjoying nature is the right of every American and that there should be an official national park system. He saw the spectacular beauty of the American West when he walked through the Sierra Nevada in California, and was passionate about preserving the country"s national wonders. In 1892, Muir founded the Sierra Club, an environmental organization that protects wild lands to this day.Desktop Version
April Fools Day
April Fools Day
In honor of April Fools" Day, take a moment to appreciate this trick of the eye created by the French street artist and photographer who goes by the name JR. He"s known for surreptitiously posting large black-and-white photographs in public locations, often in humorous contexts. This cheeky public-art piece from 2021 was installed in the desert sands of the Giza pyramid complex in Egypt. The installation makes it look as if the detached tip of the Pyramid of Khafre magically hovers above its base.Desktop Version
Pi Day
Pi Day
Today we"re observing Pi Day with a bird"s-eye view of the hedge maze at Cyherbia Botanical Park near Ayia Napa in Cyprus. It"s the day we celebrate the mathematical constant π. Today"s date, March 14, was chosen because when expressed numerically, it matches the first three digits of pi: 3.14. You remember pi from geometry class—it"s the ratio of the distance around a circle to the distance across it. Pi is used to compute a circle"s area and circumference. The circular labyrinth at the Cyherbia Botanical Park brings the ratio to life and is a must-visit for people who love to solve puzzles. If you"re ready for a challenge, give it a go.Desktop Version
Storseisundet Bridge, Norway
Storseisundet Bridge, Norway
Norway"s picturesque Atlantic Ocean Road crosses eight bridges as it makes its way across islands, islets, and reefs to link the island of Averøya with the mainland Romsdal Peninsula. The longest of them, pictured here, is the Storseisundet Bridge. This bridge, surrounded by ample natural beauty, was tough to build. It took six years, and during construction workers were pelted by the region"s unpredictable weather, including 12 hurricanes. It opened in 1989 and remains a popular visitor attraction. With its dramatic curve and sudden incline, Storseisundet Bridge creates the illusion of suddenly disappearing into the ocean, making drivers skip a heartbeat. Its construction showcases the brilliance of Norwegian engineering, blending seamlessly with the landscape.Desktop Version
Rosa Parks Day
Rosa Parks Day
On Dec 1, 1955, Alabama native Rosa Parks took a stand when she refused to stand. Parks rejected bus driver James F. Blake"s order to vacate a seat on a Mongomery bus in favor of a white passenger and was arrested and fined for this act of civil disobedience. Parks then helped lead a boycott of Montgomery buses that lasted for over a year. The year-long protest finally ended when the US Supreme Court ruled that Alabama’s laws enforcing segregation on city buses and other modes of transportation were unconstitutional.Desktop Version
National Find a Rainbow Day
National Find a Rainbow Day
Happy National Find a Rainbow Day! These colorful natural marvels appear when light strikes water droplets, creating a natural prism effect. So, areas that have plenty of sunshine and showers are a good place to start your search.Desktop Version