A park full of outsider art, created by college students studying outsider art.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

The only surviving prototype for Buckminster Fuller's house of the future.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

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

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

A local prank turned town icon.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

The first American department store, and home to the largest operating musical instrument in the world.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A toxic ghost town sitting atop a massive coal fire.

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

Massive volcano in the Andes is the farthest point from earth's center.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

Visitors come from all over to bring gifts and tokens to the grave of Alice, who is thought to have died of a broken heart.

A mailbox that saved a nature reserve.