The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This snug medieval lane is one of the narrowest streets in the world.

This colossal war machine is now a living museum dedicated to underwater warfare.

Obscene versions of this artist's work are the most popular.

This lighthouse was crafted as penitence for the theft of wine bound for a monastery.

The now-quiet remains of coastal artillery defenses that were used in both World Wars.

This stream-carved gorge has inspired poets, hidden smugglers, and trained soldiers, all without losing its beauty.

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

This purpose-built dinosaur museum is shaped like a pterodactyl and holds fossils that were found in its very village.

The Last Home of an Executed King.

This foolish Victorian sea fort was converted to a deluxe hotel.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

The Pope’s secret escape route.

These spartan apartments are provided to clergymen visiting Vatican City.

It's believed that these columns marked the end of the Via Appia.

The sunlight passing through the opening of this huge cave system creates a magical effect.

The oldest-known example of a historic architectural style recognized by UNESCO.

Southern Italy's spinning top village.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

Geometry and mystery come together in an epic show of octagonal masonry.

A massive bridge forms part of an aqueduct that was deemed an architectural wonder of its time.

The remains of this 2nd-century Roman temple are incorporated into a modern building.