The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The rogue roots are gradually consuming some of the historic marble grave markers.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

Exact replica of the ancient monument, but much, much lighter.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

The only place for a truly presidential dram.

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

This simple stone memorial remembers a secret, Geneva Convention-defying interrogation base from WWII.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

A diorama of the Civil War, fought by cats.

This recreation of a 19th-century dime museum is full of oddities.

The Home and murder site of the witch of Rehmeyers Hollow.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

The slate extracted from these Pennsylvania quarries was once hailed as the finest in the world.

Pennsylvanian mass grave and possibly mass murder.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Where America's first doomsday cult awaited the end of the world.

Arlington Cemetery exhibit dedicated to death and grieving.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

America's first serial killer rests in anonymity.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

A completely round house designed for the Atomic Age.

A "Bugseum" dedicated to all things insect-related resides behind a pest control company.