In this medieval fish bowl, the carp weren't pets.

English Protestants once criticized this enormous private chapel for being too ornate.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

The undercroft is a spectacular example of medieval Cistercian architecture.

One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

The phone booths in this English town have distinctly milky hues.

The UK's largest private house was the subject of a long-lasting political dispute.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

Some of England's last cave dwellers lived and worked within this huge cave.

Semi-precious Blue John stones have been mined in this cavern system for centuries.

This iconic Peak District ridge was once one of the busiest roads in medieval Britain.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

A medieval relic whose great hall once hosted Mayflower pilgrims, one of Henry VIII’s ill-fated wives, and plenty of royal intrigue.

Once a training ground for Olympic athletes, this artificial ski slope has fallen into ruin after a fire in 2012.

Three memorials honor the victims of the worst sports stadium disaster in Britain.

Despite its ornamental looks, this towering Tuscan-inspired anomaly was a masterpiece in hydraulic engineering.

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

One of England's oldest ongoing games is basically a town-wide scrummage that aims to push a leather tube into a local pub.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

A 2,000-ton rock resting in a state of a delicate balance.

A stone obelisk towering over the surrounding countrysides beckons hikers across the rolling moors.

This mummified mermaid corpse is an aquatic curio that was eventually revealed to be a fake.