This nonsensical smiling boat shuttles passengers between two places they could've easily walked between.

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

On a clear day, you can see all the way to the Virgin Islands from the top of this observation tower built in the 1960s.

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

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This beloved marketplace mascot poops money and grants good luck.

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.

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

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.