Pennsylvania's own Roswell-style UFO mystery.

Illegal drag racing two stories beneath Chicago’s streets.

An abandoned stretch of highway, deteriorating next to the operational one.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

These unusual rooms on wheels are holdovers from the 1960s.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

The humble field where the first Major League Baseball game was played.

This collection honors the iconic, and proudly American lighter that just won't quit.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Built by the patriotic residents of Boonsboro in a single day.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

Official museum, hall of fame, and repository of the Texas Rangers.

A 131-year-old wunderkammer of Texas history.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

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.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

In which a local geological marvel becomes a quaint roadside attraction.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.