Though these human-made islands were constructed as an escape for the wealthy, they rarely see many visitors.

This astronomical clock is the second oldest in England.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A man's home is his castle.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

An ancient stone fortress considered by many to be the eighth wonder of the world.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.