A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Mysterious rocks that ring musically when struck.

A unique sculpture park that specializes in the huge and bizarre.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

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.

Destructive children, start your engines.

Where America's first doomsday cult awaited the end of the world.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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

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

This elaborate towering structure was once famed for its revolutionary height.

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

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

A daily replay of the experiment that proved the rotation of the Earth.

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

Yo, Adrian!

Dr Barnes' $25 billion private collection of art and arboretum.