Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

The oldest military monument in the United States.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

This propitious plastic porcine has been petitioning park visitors to pick up after themselves for more than 50 years.

Historic barracks utilized during both the Revolutionary War and the Civil War.

The only public swimming pool in Baltimore open to Black Americans during segregation is now a permanent memorial art exhibit.

One of the oldest standing structures in Montgomery County, Maryland.

This hidden treasure provides a charming access point along the south side of Baker Park.

The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

The final resting place of an iconic drag performer is decorated with pearls and hot-pink lipstick.

This grove was planted more than a century ago by the War Mothers of World War I.

This 16-foot, intricately detailed model of the Gearing-class destroyer has been called the most detailed model ship ever built.

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

A Maryland museum dedicated to Black history, housed in a historic church.

The headquarters of the Audubon Naturalist Society is a small slice of heaven for nature lovers.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

The wooded estate of the Forest Service employee responsible for D.C.’s cherry blossom trees.

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

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.