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

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

Where the "World Pinball Champion” is crowned.

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

One Pittsburgh musician's decades-in-the-making memorabilia collection is on display at this rock-n-roll curio shop.

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

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

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

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

A giant ball made from pieces of an old Jeep.

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

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

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

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

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

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

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

Hundreds of protractors affixed to surfaces all over the city.

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

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

Within this beautiful Pittsburgh cemetery, a unique headstone bears witness to one man's eternal love for Jaws.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.