The world's last remaining store of its kind.

Yo, Adrian!

Believed to be the birthplace of the United States Marine Corps.

An Irish Memorial commemorating those who perished due to potato blight.

Step into a pastel time capsule where candy is truly dandy.

In the early 1800s, surgery was also a show.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

This beloved marketplace mascot poops money and grants good luck.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

Pennsylvanian mass grave and possibly mass murder.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

This iconic Lancaster everyman has been reading the same story since 1980.

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

The first of Lancaster's "rural cemeteries."

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Dentist's hated concrete colossi are now beloved icons of the community.

His discovery kicked off the Gold Rush. One of the hands on this commemorative statue points to the spot where he found the precious metal.