Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Apparently, the whole cosmos emanates from this plain concrete tower.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Pennsylvanian mass grave and possibly mass murder.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Oldest existing wire suspension bridge in the United States.

A medieval castle in the middle of rural Texas.

A well-preserved example from a 1920s network of airmail navigation arrows sits near Interstate 15 in southern Nevada.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

In the late 1990s, a mechanic and fan bought this iconic sportscar back from the dead.

This gas station offers wine tastings and craft beer.

A starship has landed in Texas, a welcome break for weary travelers from a drab stretch of I-35.

This historical air terminal in Houston is slowly becoming an aviation museum dedicated to the city's aeronautical history.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

A bunker "with enough U.S. currency to replenish the cash supply east of the Mississippi" in the event of nuclear war now protects nitrate film.

This unfinished tribute to a hometown hero and early baseball great is now an abandoned roadside attraction.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A giant lumpy candle serves as a beacon for this highly scented pit stop.