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

The slate extracted from these Pennsylvania quarries was once hailed as the finest in the world.

The largest collection of Frazetta originals in the world.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The site of America's first commercial oil well essentially disappeared after the town went bust.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

The first of Lancaster's "rural cemeteries."

The oldest surviving presidential residence in the United States.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

This public park was the site of the largest civilian disaster of the Civil War.

A legendary boxing venue and ring featured in Rocky V.

For decades, it has disappeared and reappeared as water levels rise and fall.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

This collection honors the iconic, and proudly American lighter that just won't quit.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

This secluded walking trail is a hidden gem of a Pittsburgh park.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

There aren't too many operational funiculars around, but Pittsburgh has two!

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

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.