Odd outsider art installations surround a Gold Rush-era ghost town.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

Oddly shaped rock formation, misassociated with a nearby utopian community.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

Dine amidst exotic plants at this former royal greenhouse.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

The beautiful baroque library of the Hapsburg empire.

Stunning Roman aqueduct used for 1900 years and still standing.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

60 feet of towering steel balances gracefully.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

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

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

This shop specializes in oddities and Victorian-inspired wonders.

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