Continuing the tradition of the dime museum in style.

This failed condo development was reborn as a street art hub.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The trials and tribulations of marking Poe's grave.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

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

Memorializing an American tragedy of massive proportions.

This dramatic rail curve was once the target of a failed Nazi attack.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

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

Steepest flood safety railway in the entire world.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The romance of early commercial flight still fills this Art Deco destination.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

The maritime museum that boasts the largest nautical library in the western hemisphere.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

A former major munitions plant that has been converted into a sprawling art space.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.