Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

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

Yo, Adrian!

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

World's first "penitentiary," meant to be humane, drove men insane.

Century-old shop, specializing in Occult products.

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

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

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

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

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

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

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

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

Inside this store, a mysterious statue draws visitors from the world over.

A Wild West jailhouse that slid down the mountainside.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A spiritual vortex among the red rocks in Sedona.

A museum dedicated to antique toys, collectibles, and nostalgia.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The site of Paul Revere's historic two lantern warning.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

A mysterious stone embedded at the base of a historic Boston building.