The land is home to swimming ponies and a legendary 18th-century treasure.

The trials and tribulations of marking Poe's grave.

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

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

A peaceful international sculpture garden in upstate New York.

Hundreds of antiquated typewriters and office machinery show the technological evolution of business.

Dr Barnes' $25 billion private collection of art and arboretum.

Town of spiritualists and mediums in Florida.

A mega theme park-wax museum mélange containing all things biblical.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

For divers and music lovers, the Florida Keys' Underwater Music Festival provides the best of both worlds.

A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

A gaudy painted elephant stands in memory of south Florida's fallen carnies.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

This giant disembodied horse head seems to balance impossibly on its nose.

A completely round house designed for the Atomic Age.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

One of the world's largest model railroads is a mind-boggling achievement.

It's a pretty creepy lock-up.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.