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

Century-old shop, specializing in Occult products.

The oldest surviving presidential residence in the United States.

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

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

This beloved marketplace mascot poops money and grants good luck.

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

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

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

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

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

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

The first American department store, and home to the largest operating musical instrument in the world.

In the early 1800s, surgery was also a show.

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.

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

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

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

The oldest surviving botanic garden in the United States.

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

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

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

A rare view of a preserved Victorian science museum.