Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

The famous author's cottage hideaway.

The "Seinfeld" diner.

A semi-scholarly approach to sex.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A terrific purveyor of natural history objects and curios.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

An outlandish shoe shaped house built by an eccentric millionaire.

The abandoned coal loading dock is a canvas for unsanctioned art.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.