The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

One of the only memorials dedicated to journalists who died in combat.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

The trials and tribulations of marking Poe's grave.

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

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

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

These massive concrete balls were used to mine gold in Virginia.

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

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

One of the last active volcanoes on the Eastern seaboard.

The resting place of a Civil War celebrity's amputated limb.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

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

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

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

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

The narrowest house in America is seven feet of pure spite.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

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