This mysterious eye has a debated purpose.

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

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

Fascinating town where normal life interfaces with the occult.

The largest greenhouse in the world is home to over one million types of plants.

Cornish legend says these ancient circles were people turned to stone for playing hurling on a Sunday.

The world's largest collection of witchcraft regalia.

Catacombs turned marketplace.

This whimsical, unique clock has been entertaining shoppers for well over 20 years.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

One of the techniques used to construct this 1797 mill was later incorporated into modern skyscrapers.

A prison with a more than 200-year history.

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

One of the first canal boat-lift inclines ever created.

A seaside town with no sea in sight.

This Victorian marvel of engineering and artistic prowess is nicknamed the "Cathedral of Steam."

Inside this chapel, Victorian jailers took the separate system to new levels.

In the U.K., a historic workhouse shines a light on the early, harsh treatment of the poor.

Isaac Newton's former home, where the famous apple tree still stands.

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

A monument at the site of a decisive battle in the First English Civil War.

The alleged birthplace of Lady Jane Grey, who was executed at age 16 for claiming the throne of England.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

A moving memorial to the fallen and missing from WWI trenches.