St. Augustine's record-setting narrow street was designed to protect against pirates.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

The first of Lancaster's "rural cemeteries."

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

America's first public mental health facility.

Outsider art meets paleontology at this roadside reptile repository.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A Civil War Museum with some notable medical antiques.

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

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

The home of the first American-born saint is one of the only curved buildings in New York.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.