Renaissance villa and gardens complete with a tormented colossus.

A 16th-century horror show built in a lovely Italian garden.

This winding road through an Italian canyon may be the most scenic drive in the world.

The Gaudí-inspired building that was the start of Terrassenc modernism.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

The bomb-ravaged remains of of a colossal Neptune.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Double spiral staircases are not unheard of, but they are very rare.

These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Elevated freight railway turned wildly successful urban park.

Climb right into the heart of this colorful Iceland volcano.

A winding, blood-red tunnel of hardened lava navigable by foot.

The final resting place of the poets Shelley and Keats.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A submerged archeological park still holds the wonders of a Roman Sodom.

Eighty million natural history specimens call this gargantuan museum home.

Giant, friendly pelicans in Central London, the most unlikely of places.

Architectural monsters are devouring this palace's every door and window.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

No need to strap in for a "ride" on this walkable roller coaster.