A historic presidential getaway on the continental United States' southernmost island.

"We Seceded Where Others Failed."

A mysterious castle built as a monument to lost love.

Rare recess caves fill this unbelievably beautiful Ohio park.

Former villa and estate of James Deering developed to preserve native tropical forests.

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

America's only city hall with minarets took architectural cues from Ali Baba and the Forty Thieves.

Deep in the countryside lie the remains of one of the grandest Roman dwellings in Britain.

Britain's answer to the NSA is based out of this deliciously-named circular headquarters.

This unassuming Victorian cemetery is the final resting place of author Lewis Carroll.

The trials and tribulations of marking Poe's grave.

This four-story steel sphere in Maryland was used to test biological weapons.

A museum of anything and everything Stooge.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This sweet Southern elixir comes from what may be the oldest grape vine in North America.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

A monument celebrating the idea of reaching inaccessible places.

Located within a historic park, the beacon is the oldest standing structure in Miami.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

Bizarre Cavern.

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

A Civil War Museum with some notable medical antiques.