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

A field of nothing but boulders which resembles a giant's gravel driveway.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Check out the 125-pound chocolate reindeer in the back of this candy shop.

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

Curtiss is a forgotten figure in the early history of flight.

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

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

An ideal wedding spot that is almost too ideal.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Enormous lake at the bottom of a unique cave system.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

The world's longest known cave system.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This suburban house is made of dirt, and almost sparked a revolution in home construction.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.