The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This spectacular track has run continuously since 1882.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

The oldest military monument in the United States.

This statue honors the author's groundbreaking family story.

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

FDR's Art Deco hospital tower was hopelessly inefficient.

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The Decoy Capital of the World.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

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

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

The likeness of the Baltimore music icon was unveiled in time for the anniversary of his Senate hearings on music censorship.

Once America's tallest structure, now a Baltimore landmark.

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

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

Ship skeletons haunt Baltimore's waterways.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.