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.

A haunted hill that supposedly defied gravity.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A sweet tribute to Georgia's official state vegetable, which even has its own mascot: "Yumion."

A monument to one of the few Olympic flames ever to be lit outside of the host city.

A statue honoring 44 continuous years of greeting passing ships.

This kitschy tavern is also home to rare early editions of "Treasure Island."

A piece of outsider public art accompanied by a strange urban legend.

A glimpse at Walt Disney's vision for a "community of tomorrow," in miniature.

Electrical pylon in the shape of Disney's beloved mouse.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

The only Leonardo Da Vinci painting in the Western Hemisphere.

This large garden vase urn has nothing to do with the seventh U.S. President—it was designed by one landscape designer to honor another landscape designer's contributions to the National Mall.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

The oldest living tree in Manhattan comes shrouded in sinister legend.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Scattered around Atlanta are little doors with big charm.

One of Ireland's most infamous prisons for rebels including men, women and children.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.