Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

These medicine cabinet staples are part of the museum's collection of everyday objects.

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

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

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

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

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

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

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

The humble field where the first Major League Baseball game was played.

A rare view of a preserved Victorian science museum.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

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

An Irish Memorial commemorating those who perished due to potato blight.

Alexander Hamilton’s creation caused quite a bit of controversy.

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

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This beloved marketplace mascot poops money and grants good luck.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.