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

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

A larger-than-life statue of America's favorite sundae marks the place it was invented.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

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

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

In which a local geological marvel becomes a quaint roadside attraction.

The oldest surviving botanic garden in the United States.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

It's a repurposed treasure trove of history, located just an hour away from Acadia National Park.

This nature mural exists to protect the surrounding environment and its own canvas from destruction.

A collection of birdhouses await curious motorists and avian squatters.

The remains of a large iron mill that once stood in the remote woods of northern Maine.

As communication goes completely wireless, this Maine museum remembers all the wires that got us to this point.

The whole of Maine's history with the salty little fish is packed into this tiny coastal museum.

They call buildings like this "mimetic architecture," but nothing has ever mimicked the taste of Moxie.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

Explore the dark underground corridors of this graffiti-covered former military fortification.

The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

Inside this magical collection, you can buy recipes cooked up by church ladies, motorcycle clubs, and clowns.