In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

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

This small road tunnel is the only place where you can cross beneath the Erie Canal.

Intact 125-year-old carpentry shop and Victorian house, along with cobblestone architecture structures.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

A free park where visitors can learn about and collect 440 million-year-old fossils.

The largest earthwork effigy in the world.

Perfume museum and library.

A bike train runs along a disused railway line through the tranquil French countryside.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

This functioning mill was built in the 1970s using parts from several other West Virginia mills.

A historic coal mine that doubles as a museum and tourist attraction.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

An abandoned asylum incorporated into a college campus.

This underground holding cell was forgotten for over a century and rediscovered in the 1960s.

Constructed in 1882, this jail once housed local inmates and the sheriff's family all under one roof.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

This outdoor exhibit features a historic wooden dam once used to help boats navigate the Ohio River.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

The mounds at this site were reconstructed with the help of archaeologists and historians.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.