America's post-nuclear-attack chambers of Congress.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

The largest piece of cut lead crystal adorned a grave for 75 years and is now the shining star of a glass museum.

The only surviving 19th-century water-powered mill found in the Washington, D.C. area.

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

The Aldie Gristmill was once the largest factory of its kind in Loudoun County.

This Federal-style plantation house was once visited by Abraham Lincoln to meet with generals during the Civil War.

At Brandy Station, Civil War soldiers left their mark on the battlefield and the walls of this small wooden house.

This homestead was occupied by Union soldiers, who believed the owners were signaling Confederate forces.

The only remaining African American schoolhouse in northern Virginia is now a museum dedicated to formerly enslaved people.

The former home of the man whose radical ideas changed the nation.

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

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

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

An alternate history park where the Union Army loses the war... to dinosaurs.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

Rare recess caves fill this unbelievably beautiful Ohio park.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A melancholy guardian doubles as a judicious godmother to this small town cemetery.

This church is known as "The Home Church of George Washington and George Mason."

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

These figures float and flutter in this fountain crafted by famed Swedish sculptor Carl Milles.