The world's oldest continuously operating airport was founded by the Wright Brothers.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

Nothing says indulgence like a 1,500-pound chocolate castle.

This secluded walking trail is a hidden gem of a Pittsburgh park.

This icon of the Atomic Age now lays dormant.

The ruined remains of a coal mining ghost town are hidden within the woods.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

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

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

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

This semi-spooky remnant of an abandoned hotel provides fantastic views.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

World's largest herd of white deer populate a former U.S. Army depot.

An abandoned asylum where patients have been forgotten but their possessions remain.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

In the mid-19th century, an eight-sided house was the latest fad.

Home on the Hillside, and home of the first breakfast cereal.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The seat of Buffalo government is a gorgeous Art Deco palace.

A 19th-century architectural wonder designed by the "father of the skyscraper."

A tiny one-room church built after one man's prayer for healing was answered.