This demolished goliath of American industry once loomed over the depressed town it once made thrive.

Priceless space junk on display in front of a local Dairy Queen.

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

The oldest surviving presidential residence in the United States.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

A "house to which to flee" for settlers in colonial Pennsylvania.

In this cemetery stands the country's first public crematorium.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

It may appear to be a fancy junk yard, but each item has a story to tell and a lesson to impart.

Built in the 1970s, this curious modular home found new life as a sundae-shaped ice cream stand.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

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

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.

This colonial mansion has been home to a staggering number of American historic figures.

Each step is a mere 4 inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

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

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

Pittsburgh's literal underground railroad.

A retired firefighter created this contraption so he and his family wouldn't die if accidentally buried alive.