A unique workspace where offices reside on pirate ships and inside gingerbread houses.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.

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

A glittering Thai Buddhist temple in suburban Pennsylvania.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

These lush botanical gardens employ the most purrfect pest control force.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

The last street in Pittsburgh that's paved with wood.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

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

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

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

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

Journey through a collection of over 35,000 Halloween items from all generations.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

An outlandish shoe shaped house built by an eccentric millionaire.

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

These disused steel furnaces are now haunting ruins that may one day be a national park.

The Home and murder site of the witch of Rehmeyers Hollow.