Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Staves, storm-calling, and of course, necropants.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

See massive fossils that are over 200 million years old in northeastern Arizona.

A reproduction of earth's many biomes.

An underwater city for the dead.

Underwater restaurant at the coral reefs of Eilat.

An underwater restaurant, surrounded by a coral reef.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

World's only nuclear reactor operated by liberal arts undergraduates.

A huge musical instrument played by the ocean.

A modern mechanical planetary system, part of a 10,000 year clock.

A daily replay of the experiment that proved the rotation of the Earth.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

Harlequin costumes, signed scripts, and armor-wearing puppets.

This odd museum/art gallery embraces the physiological, zoological, and ethnographic side of sex.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.