This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

A historic arena where the Beatles played their first concert in the U.S.

The United States Capitol's former columns still stand.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

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

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

A museum dedicated to exhibiting remarkable outsider art.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

This former asylum for Black Americans is haunted by its history of violence and racism.

A Civil War Museum with some notable medical antiques.

The land is home to swimming ponies and a legendary 18th-century treasure.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

An outlandish shoe shaped house built by an eccentric millionaire.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

Bizarre Cavern.

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

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Art deco landmark on the outskirts of Washington, D.C.

This free, take-a-book shop seems like a trick but isn't.