A painfully obvious spy house sits right across the street from the Russian Embassy.

The longest living non-clonal organisms on Earth.

These termites have an large and deadly abode—impressive by day, dazzling by night.

The half-mile long structure is so impressive, it even shows up on satellite images.

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

Hauntingly beautiful totem poles left by the Haida.

Budapest's Communist-era statues, banished to the suburbs.

This modern monument to pagan belief looks like it was transported straight from ancient times.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

Two monstrous faces loom over a village in Czechia.

Cold storage for agricultural biodiversity.

This uninhabited volcanic island is the most remote in the world.

At the point of oceanic inaccessibility, you can't get farther from dry land without leaving the planet.

Wander around the extensive remains of this 12th-century medieval church.

This underwater graveyard commemorates a group of murdered 16th-century missionaries.

The oceanic dumping ground where spaceships go to die.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Native Americans built this circle of stones, which was used to predict astronomical events.

The ominously named cave is home to some remarkable ancient art.

The largest stone moai on Rapa Nui.

A desert island with both a buried treasure and a famous castaway.