America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A giant time capsule not scheduled to be cored until 2040.

A monument marks the location of the first successful steamboat demonstration.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

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

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

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

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

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This pun was simply waiting to come to life, and one defense contractor made it so.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

This old-fashioned carhop restaurant gave the world the waffle cone.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

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.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Home to items never before seen by the public.