Massive volcano in the Andes is the farthest point from earth's center.

These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.

A surprisingly detailed model of the world's most powerful radio telescope.

The “City of Stairs” sits high in the Andes, above the world’s largest underground copper mine.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

This giant mural of Santa Muerte in downtown São Paulo reminds passersby of their own mortality.

Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Legend has it this historic port was a popular hideout and smuggling spot for pirates.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

The world's northernmost flowers cling tenuously to life on desolate Kaffeklubben Island.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

360° views of the city plus five floors of optical illusions and hands-on science.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The third-largest island in Canada is one of the remotest places on Earth.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.

A lasting testament to the Klondike Gold Rush.

When the big city meets the edge of the frontier, log skyscrapers are born.

A skeletal collection of former nautical mainstays.