This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

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

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

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

This giant disembodied horse head seems to balance impossibly on its nose.

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

This colonial mansion has been home to a staggering number of American historic figures.