The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A memorial dedicated to a highly decorated Marine and Korean War veteran, who also happened to be a horse.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

This Hindu temple in suburban New Jersey is the largest in the United States and one of the largest in the world.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

The well-preserved remnants of a bridge that once made up a WW1-era military railroad.

A tavern that is no longer in Dranesville.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

A small park honors the legendary Ukrainian poet.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

People escaping slavery may have hidden inside a corpse vault.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

A small brick parlor house and artist's studio located in the wilderness is surrounded by imposing suburban palaces.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

Step inside Lucy, the world's largest "elephant."

If it feels like a speakeasy, that’s because it probably was one.

Amazingly, this old machine within the Resorts Casino still functions.