This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

One of the only memorials dedicated to journalists who died in combat.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

A Civil War Museum with some notable medical antiques.

A decorated war pigeon stands guard in eternal taxidermied rest at his alma mater.

One of the last-standing and most prominent structures from a long-lost colonial port community.

The first dish to bounce radio signals off the Moon, it was the forerunner to the U.S. Space Program.

Seven people are buried in the middle of what's now a movie theater parking lot.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

World Trade Center memorial likened to a woman's sexual organ.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

One of the world's largest model railroads is a mind-boggling achievement.

World War II bunker still standing on the New Jersey beach.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Walk through the history of American pop culture.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

A museum dedicated to exhibiting remarkable outsider art.