This historic furnace was once used to produce cannonballs during the Civil War.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This restored log building was one of the first toll booths for travelers along the Northern Turnpike.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

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

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

These disused steel furnaces are now haunting ruins that may one day be a national park.

A retrofuturistic art installation in the Pittsburgh Airport.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

The oldest living cultivated fruit tree in North America.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

A decidedly out of place statue memorializes the Blues Brothers characters at this water bottling plant.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Famously misunderstood wonder of the ancient world

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

This synagogue is covered in beautiful mosaics that explore the history of the Jewish people.