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

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

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

An overlooked memorial honoring the local Washington residents who died in World War I.

Washington's iconic carousel has a nice piece of Civil Rights history.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

Perhaps the most scandalous statue of America's first president.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

A celebrity from the late Cretaceous period.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Home to items never before seen by the public.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

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

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

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

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

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 giant ball made from pieces of an old Jeep.

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

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