There’s a hidden military meme engraved on the World War II Memorial.

This dramatic rail curve was once the target of a failed Nazi attack.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

Nothing says indulgence like a 1,500-pound chocolate castle.

These disused steel furnaces are now haunting ruins that may one day be a national park.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

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

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

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

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

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

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

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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