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

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

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

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

A wondrous old library overlooking the nation's capital.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

One of the indelible moments of the American Revolution took place at this location.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A winding, cliffside stretch of road overlooking the Delaware River.

This pun was simply waiting to come to life, and one defense contractor made it so.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

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

The world's longest covered bridge is a quaint and incredible wooden tunnel.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

One of England's most famous churches hides a pair of little known architectural treasures.

Inside the world's largest seed bank, WWII botanists elected to starve to death rather than compromise their collection.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.