This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

An ancient water supply dating back almost 500 years can still be found standing in East Sussex.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

During the heyday of fishing in Hastings, there were more than 100 of these storage facilities.

The last fully working Victorian Turkish bath in England.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

A plaque on the base of this statue holds a bewitching design.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This ancient market is often referred to as the oldest shopping mall in the world.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This curious, round temple is the oldest still-standing marble building in Rome.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

Profile of a sleeping person 4km long in 250m high cliffs.

Possibly the world's largest coin stands just outside of a Canadian science center.

Within the church are the relics of the martyrs St. Jean de Brébeuf, St. Gabriel Lalemant, and St. Charles Garnier.

An architectural marvel built by a nearly forgotten Canadian Quaker sect, the Children of Peace.

A former Canadian Pacific Railway station turned liquor store, the first and only station in Canada visited by British royalty.