The oldest olive tree in Greece has been bearing fruit for at least 2,000 years.

This stone tower was built to protect Crete from incoming pirates.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

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

Pop culture has helped to keep this iconic British building from being destroyed.

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

A little slice of Japan and its aesthetics in London's Holland Park.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A clock designed to run with perfect accuracy for 10,000 years.

Charles Babbage's proto-computer, painstakingly brought to life.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

An enigmatic natural rock formation with a manmade passage cut through the center.

A blunder resulted in these charming stone-lined streams becoming the target of a Nazi bombing.

A curious urban windmill once owned by a renowned British mathematical physicist.

When the public was consulted about a new piece of street art, they naturally asked for an enormous metal dragon.

The oldest inn in England served brew to the crusaders.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

The abandoned railway bridge stands hidden in the farmland of rural Cumbria.

A 2,000-ton rock resting in a state of a delicate balance.

One of the highest Roman forts in Britain is set amid dramatic scenery on a notoriously difficult road.

A spectacular disused railway viaduct in a beautiful countryside nature reserve.

This London marker celebrates the spot where the world-famous English band was founded.