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

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

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

Home to a protest movement, a bombing, and a dramatic change in labor history.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

An homage to everyone's favorite prehistoric cartoon family.

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

This small interfaith chapel lies not far from the rim of the Grand Canyon.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The narrowest house in America is seven feet of pure spite.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

A giant ball made from pieces of an old Jeep.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.