This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A museum of anything and everything Stooge.

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

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

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

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

Steepest flood safety railway in the entire world.

A daily replay of the experiment that proved the rotation of the Earth.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

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

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This jail which was in service for over a century is now open for curious visitors.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

An outlandish shoe shaped house built by an eccentric millionaire.

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

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

A failed piece of Orientalism has become the proud symbol of a community.

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

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

The oldest surviving botanic garden in the United States.

Dr Barnes' $25 billion private collection of art and arboretum.