The vaguely man-shaped root that ate the body of the founder of Rhode Island.

A 60-room castle constructed by a horse-racing heir.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

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

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

This Pennsylvania structure, the oldest building in Gettysburg, was once a stop on the Underground Railroad.

Soldiers’ scrawls turned into history’s signatures.

The site of the daring river crossing that changed the course of the American Revolution.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.

This is the spot where the bloodiest battle in the American Civil War may have started.

Come for the history lesson, stay for the mule-pulled boat rides.

This overlooked courtyard and museum celebrate Benjamin Franklin's life and achievements.

A well-preserved example of an early industrial operation in the northeastern United States.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.