Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

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

This ancient statue of Dionysus lies unfinished and abandoned in one of Greece's oldest quarries.

A fascinating insight into daily life in the Eastern Bloc.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A restaurant and observation deck built in a unique broadcasting antenna.

Tiny memorials honor individual victims of the Holocaust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

This monumental work of art symbolizes the coming together of a previously divided city.

Seat of the Duke and Duchess of Devonshire for centuries.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

These medieval carvings bear scars left by Parliamentarian troops during the English Civil War.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

This fantastical and eclectic English garden takes its inspiration from Egypt, China, the occult and more.

An open air haven for tropical monkeys in the damp moors of the English country.