A seasonal movie monster museum featuring wax creations by a relative of one of the original Universal Studios monsters.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

An overlooked memorial honoring the local Washington residents who died in World War I.

Washington's iconic carousel has a nice piece of Civil Rights history.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Largest Roman Catholic church in North America.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The romance of early commercial flight still fills this Art Deco destination.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

At 207 feet, one of the world's longest continuous escalators.

Outsider art meets paleontology at this roadside reptile repository.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

An original apothecary from 1792.

The world's second largest rocking chair is found on Route 66 in Cuba... Missouri.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Less a museum than a bizarre fantasy world created by artists and engineers.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

One of 100 “Whaling Wall" murals painted in 13 different countries by a renowned marine life artist.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

Final resting place of the two women killed on a small island off the coast of New Hampshire.

The most photographed house in Maine looks good enough to eat.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.