A gregarious Ohio resident has been building his whimsical temple to peace for decades.

A theme park attraction designed to turn your children into LARPers.

A circle of giant painted vases in the former pottery capital of the United States.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

An office built to look like a giant basket.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A wonderfully curated used bookstore in an airport.

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

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.

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

Hundreds of protractors affixed to surfaces all over the city.

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

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

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

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

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

This Old Testament garden features 100 plants from biblical times.

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

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

A giant ball made from pieces of an old Jeep.

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

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

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