This structure among the trees was the result of divine inspiration.

This replica of the Greek structure is in the heart of Nashville.

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

The home, museum, and death site of Kodak's influential founder.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Washington's iconic carousel has a nice piece of Civil Rights history.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

Pennsylvania's own Roswell-style UFO mystery.

Yo, Adrian!

The Home and murder site of the witch of Rehmeyers Hollow.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A toxic ghost town sitting atop a massive coal fire.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.