This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

A little-visited waterfall in an otherworldly landscape.

An abandoned Cold War missile radar site.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

Minimalist modern art on a repurposed military base in rural Texas.

Shakespeare has been brought to life in this open air theater for the better part of a century.

A public fountain that spouts "health water" from a nearby spring.

A botanic garden full of trees twisted into fantastic shapes and positions.

Treehouse motel and treehouse-building school.

As a show of peace, a Japanese naval pilot gifted his 400-year-old Samurai sword to the Oregon town he bombed.

A chance to sleep among the firs and pines of the Oregon forest.

The ruins of the castle that chemicals built.

The first attack on the continental U.S. during WWII occurred off the coast of a quiet California golf course.

The home of one of California's most important horticulturalists wilts amidst a lovely park.

Marked by the hand of the explorer Henry Morton Stanley.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Museum design and public transportation meet in this unique Russian train car.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Home of the future Emperors of Russia.

Its front wall is striped with a menagerie of fantastic beasts and magnificent monsters.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.