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

One of the oldest of its kind.

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.

The oldest surviving botanic garden in the United States.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

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

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

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