The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

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

America's first serial killer rests in anonymity.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

The abandoned coal loading dock is a canvas for unsanctioned art.

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

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

The oldest farmer's market in America is so ancient it was approved by the King of England.

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

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The graffitied ruins stand hidden within the Pennsylvania woods.

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

This might just be the TARDIS of bookstores.

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

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This little museum in the town where zombies were born celebrates the living dead.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A beautiful oddities shop crammed with strange and morbid curiosities.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.