This castle tower in Wales leans at a steeper angle than the Leaning Tower of Pisa.

From battleships to Roman vessels, this museum explores the depths of shipwrecks in the region.

A 16th-century artillery fort built to protect England against European invasion.

The excellent acoustics of this natural amphitheater made it a popular preaching spot for the founder of the Methodist Church.

The tomb of a deposed king that drew medieval pilgrims to Gloucester

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

This 11th-century Cistercian abbey was once seized by Henry VIII.

WWII artifacts, including the building itself.

The bizarre headgear looks like it was made for a fool, not a king.

One of three sites in England that house the National Collection of Arms and Armour.

The world’s second-largest flood defense barrier has protected London for decades.

The Last Home of an Executed King.

A herd of half-sized cow sculptures has stood in this part for nearly 50 years.

This grave remembers the beloved canine companion of soldiers far from home.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

A reconstructed section of a Roman bathhouse sits next to an otherwise ordinary shopping mall.

A futuristic, brutalist masterpiece that is also strangely prison-like.

An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

These sculptures honor the knights who once called Carrickfergus Castle their stronghold.

A glimpse into the last days of a once-booming past fishing industry.

A restored World War II Churchill Mark VII Tank now stands guard in Carrickfergus.

A replica memorializes the site where women were punished after the last witchcraft trial in Ireland.