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

A luxuriant botanical garden below sea level.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

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

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

The historic home still shows the scars from a little run-in with the British in 1813.

Designed to commemorate the founding of the first settlement in Delaware.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Breathtaking and huge 430 year old maps of Italy.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The yawning maw of this pagan visage is said to bite off the hands of liars.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Drink wine handed out through a window as part of an age-old tradition.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Secret refuge and museum of the Duke of Florence.

The middle finger of modernity.