The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

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

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

This beloved marketplace mascot poops money and grants good luck.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Yo, Adrian!

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

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

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

One of the oldest of its kind.

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

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

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

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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.

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