The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Yo, Adrian!

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

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

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A historic covered bridge is but one example of an oddly prevalent American urban legend.