This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

Romania's triumphal arch looks out over Bucharest.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

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

A fairy tale castle in modern Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The amazing wonder cabinets of a very rich Austrian archbishop.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

The world's largest grapevine has produced a delicious harvest at Hampton Court Palace for almost 250 years.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

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

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

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

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This London plaque marks the spot where David Bowie's famous alien made his debut.

An artistic tribute to the famous singer, just around the corner from where he was born.