The eerie ruins of this feudal fortress witnessed the execution of 60 conspirators in 1387.

A gorgeous medieval library where the books are kept in chains.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

Only the facade of this house was built so a father could fool his son.

Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

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

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

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

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

When you can't get to the Pacific, just go to Florida.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

This 1920s railway depot is now home to two unique museums complete with a miniature train ride.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

Built in just a little over a week this preserved bunker was created to protect our most attractive POTUS while he was on vacation.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

Built in 1927, this pink stucco hotel once hosted stars of Hollywood’s silent movie era. Now it's being brought back to life.

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

Given just one more year to live, Conrad Schuck built his dream house in Bartow, Florida.

The site of a gold-digging conquistador's bloody landing in the Americas.

A creative deviation in this post office's design was once a source of controversy.

History is hiding at the Morean Center for Clay.