This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

The highest point in Virginia can only be reached by passing through ponies and flowers.

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

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

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

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

The ruined remains of a coal mining ghost town are hidden within the woods.

According to local myth this cemetery is half evil spirits, half good—split down the middle.

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

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Mysterious rocks that ring musically when struck.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

A modern sliver of architecture in Roma.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.