The longest covered bridge in Delaware.

An unusual and eclectic collection of local historical memorabilia.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

The home of a 19th-century author who brought African-American folktales to the mainstream is now Atlanta’s oldest house museum.

Once seen as a bit of an eyesore, this sculpture has become a staple of downtown Houston.

This abandoned church languishing for decades is now one man's passion project and subject of paranormal investigators.

At Brandy Station, Civil War soldiers left their mark on the battlefield and the walls of this small wooden house.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

This landmark cemetery in Boston was created more than 300 years ago.

An aptly-named street near the birthplace of the modern LGBT rights movement.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

The massive machine creates cracking displays of indoor lightning.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

Over the last century, this elegant columned facade has been home to the headquarters of a bank, several nightclubs, and a restaurant.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.

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

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

A monument to the Mohawk people stands along an old Native American trade route.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

Resonating tubes make music from highway overpass.