This awkward aquarium sculpture is one of the strangest statues in Chicago.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

A crumbling hospital from the 1850s on Roosevelt Island.

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

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Oldest building in California still in use.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

An eclectic trailer park retreat in the middle of the California desert.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

America's most famous piece of self-built architecture.

A Masterpiece with a Tragic History.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Furniture tries to escape an abandoned building in San Francisco.

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

Frank Lloyd Wright died a year before construction on his largest public project even began.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

A wall of chewing gum moonlights as collective art.

No two pieces are exactly the same at Portland's hippo-themed hardware store.