The ruins of a town wiped out by the second-largest earthquake in recorded history.

A historic freight system that found the true gold rush is in tourism.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

The king of U.S. high points towers over every other peak on the continent.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Go inside to really appreciate this 500-year-old technological masterpiece.

The glowing blue Nymphaeum of Emperor Tiberius.

Water and windows define this defensive Italian well.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

Pick up this rock and become an instant legend.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."

A fantastic reconstruction of a 10th-century Viking longhouse.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This fairytale-like structure is the last turf church ever constructed in Iceland.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This sculpture forces visitors to confront their relationship with space.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

This mural of the late David Bowie features eight colorful panels showcasing Bowie’s various alter egos.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.