These unusual rooms on wheels are holdovers from the 1960s.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

An innovative attempt to break a siege in the American Civil War still scars the earth today.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

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

A former major munitions plant that has been converted into a sprawling art space.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

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

At 207 feet, one of the world's longest continuous escalators.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

An outlandish shoe shaped house built by an eccentric millionaire.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Twenty-eight years after this local landmark was washed ashore by hurricane Hugo, it was washed away by hurricane Irma.

The final resting place of the Seminole Indian chief who fought against government occupation in Florida.