A neighborhood of houses made of poured concrete through a process invented by Thomas Edison.

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

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

These Benedictine nuns have been making artisanal cheeses since before it was cool.

Designed by Calvert Vaux, this former post office now serves as a home for the local arts.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Discover these whole-house works of art in Pittsburgh’s Troy Hill neighborhood.

The first burial place of the Harmonist Society, a utopian community for which the surrounding town of Harmony is named.

This artwork in a Pennsylvania forest will gradually be overtaken by nature.

This Old Testament garden features 100 plants from biblical times.

Once home to a wealthy ironmaster, this 19th-century mansion now holds unique relics from Blair County's past, and perhaps the spirits of its former occupants.

A full-service gas station known as the oldest in America.

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

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

True to his word, George Swanson is buried in his white 1984 Corvette.

A bronze statue of Mister Rogers in the neighborhood where he grew up.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Playful installation outside a Pittsburgh art gallery might feature the world's longest historic-plaque text.

An outlet for connecting to memories of lost loved ones and saying goodbyes you never got to say.

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

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

Explore this unspoiled peninsula with 11 sandy beaches and 13 miles of hiking and biking trails (keep an eye out for soaring bald eagles overhead).

Hundreds of protractors affixed to surfaces all over the city.