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

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

The king of U.S. high points towers over every other peak on the continent.

Four-story concrete hotel never opened to customers.

The sculpture's largest spire points directly toward the North Star.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

A trading post in the North Pole where children send letters.

The ghostly remains of what was once the world's richest copper mine.

At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

A natural history wunderkammer in the middle of the desert.

Considered by many to be one of the most dangerous highways in Alaska.

America's first federal monument.

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

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The homestead of American patriot John Adams.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

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

Millions of numbers carved in glass represent the tattoos forced upon victims.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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.

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