Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

This tiny movie theater was the last one in the U.S. constructed in the Nuevo Deco architectural style.

The home of the world's first and last remaining "wooly ant."

The steepest tramway in North America provides stunning views of the out-of-the-way Wallowa Mountains in northeastern Oregon.

The last water-powered mill in Oregon is open daily for free tours and has a surprising history.

At the base of Steens Mountain resides an otherworldly desert.

There's something big lurking beneath the surface of this tiny Oregon park.

A statue commemorating the island's tradition of dancing dwarves in Napoleon hats.

This tunnel was built in order to protect the village of Daroca from flash floods during rainy seasons.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

An open-air "garden" of mural art that changes weekly.

A series of well-preserved ruins show the culture of the ancient Benehoaritas people.

Peek into a cave of giant, glimmering crystals.

An unexpected ghost village lurks on the southeast coast of Tenerife.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

This art installation at an abandoned lipstick factory has distinct anti-capitalist vibes.

A house covered entirely with shells.

A controversial art piece that harkens back to local folklore.

This enormous censer uses a pulley system installed over 400 years ago.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

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

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

This 47-story "M" needed 20 years to be completed