This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Japan's corrupt-mental-institution themed restaurant offers diners a chance to eat inside of filthy cells.

A huge musical instrument played by the ocean.

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

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

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Francisco's newly reopened hands-on science museum.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

Theater has had many different incarnations but has survived the ravages of time.

The palatial McDonald's that inspired Wesley Willis.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

This historic hotel invented the chocolate brownie.

A giant Troll lurks under one of Seattle's oldest bridges.

A wall of chewing gum moonlights as collective art.

Race through the maze, get your name on the sign.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.