Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

An unassuming secret door once led to a legendary watering hole.

An aluminum skeleton brings Chinese mythology to the French shore.

At night, this glittering musical tunnel draws skaters and photographers.

A huge work of Burning Man-inspired outsider art on the grounds of a California winery.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

This unique rock formation has become a popular walking trail.

Banished from town, this local jester concocted a clever return.

The suspected burial mound of legendary Viking Björn Ironside.

A small house sits between two huge rocks, with its back to the sea.

The legendary building that needed ghostly approval before being built.

World's first "penitentiary," meant to be humane, drove men insane.

A modernist landscape of water and sci-fi concrete.

In the foothills of the lesser Caucasus, a centuries-old fortress still stands.

With a crest near 10,000 feet, this treeless fault-block mountain in eastern Oregon provides stunning views and spectacular glacial landforms.

A shockingly detailed small scale recreation of the temples of Abu Simbel.

The location of this historic castle was inspired by a donkey.

A little-known castle set in a nature reserve.

One of the most spectacular 18th-century bridges in Scotland.

In the Scottish Highlands, this 13th-century castle ruin is hidden at the end of a farm track.

This reconstructed Norman castle is the world's most accurate, from location to livestock.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."