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

The last street in Pittsburgh that's paved with wood.

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

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A piece of baseball history is preserved in a Pittsburgh parking lot.

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

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

This shop filled with oddities and knick-knacks is named for a 19th-century charlatan.

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

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

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

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

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

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

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

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

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

Archaeological sites and great food inside the island's largest mangrove forest.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This tiny home was originally a narrow alleyway.

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This community-driven organization uses education and eco-friendly technology to protect the environment.