This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

An unusual artwork dedicated to a unique man that entertained people visiting Cambridge while raising money for charity.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

An ancient octagonal weather station named for the eight Greek gods of wind.

A Byzantine-era church hidden in a wooded area below the Acropolis.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

Legend says this sacred tree was a gift from goddess Athena.

Since 1969, this restaurant has served up dishes typical of Istanbul's Greek diaspora.

A sharp sculpture made of thousands of pieces of jagged glass.

The hallucinogenic center of the ancient world.

A solemn reminder of the infamous World War II war crime that massacred almost all the men in a small Greek town.

This legendary city has been a tourist attraction for centuries.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

A miniature version of the ship that took John Cabot from Bristol to Newfoundland.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

A fantastic castle rumored to be the birthplace of King Arthur.

This ancient stone bridge dates back to the early Middle Ages.

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.

In addition to escorting prospective couples to and from ballrooms, this lane was also a place for gentlemen to settle scores.