Historic slum of Tartu.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

Flamboyant architecture from the turn of 20th century.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

A black cat protests the City Guild in Riga's Old Town.

Lithuania's outdoor sculpture trail of wooden folk art.

Guests become prisoners on a visit to Latvian prison.

3,000 market stands in five former Zeppelin hangars.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Ever-growing collection of devils in art.

These medieval tunnels provided water to the city above through centuries of civil war and plague.

Giant naked man on a hillside.

Fascinating town where normal life interfaces with the occult.

Cliffs full of fossils at the portal to England's Jurassic Coast.

The world's only managed flock of mute swans was established as a factory for monk meat but is now an adorable sanctuary.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The longest hedge maze in the world.

An ancient Egyptian temple in the middle of Madrid, Spain.

The earliest known map to show America, discovered by accident at a Paris bookshop.

Commonly acknowledged as the only public monument to the Devil himself.

The metal frame is all that's left of a wicker sculpture which once towered over the M5 motorway.

Museum about life, death, and cannibalism in the Stone Age.

"Would you like your sangria in an IV bag, or straight-up?"