This nondescript building hides an entrance to an underground nuclear tunnel system.

This tiny watering hole claims to have the smallest bar counter in Europe.

A tiny, heartwarming piece of art hiding in plain sight.

The largest preserved walking dragline excavator in Western Europe.

Despite having a dome made of papier-mâché this tiny observatory has survived for over a century.

This 19th century police station now puts the history of the Manchester City Police on display.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

A hunk of prehistoric lava rests amid the Gothic architecture of a campus quad.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Probably the smallest museum in the world, housed in a disused phone booth.

Great Britain's only hat-making museum.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

The undercroft is a spectacular example of medieval Cistercian architecture.

This small building nestled along the Dove River is seen by some as the birthplace of angling as a sport.

These abandoned coal mine towers near Sherwood Forest might soon boast the U.K.’s longest zip-line.

This unique medieval court deals solely with the lead mining laws in two small areas of Derbyshire.

The English town of Mansfield likely got its name from this enigmatic breast-shaped mound rising abruptly from the earth.

English parliaments were once convened by this ancient oak tree in the heart of Sherwood Forest.

This memorial is dedicated to the hundreds of soldiers from Featherstone who died fighting World War I.

This landmark Victorian folly rewards visitors with spectacular views over the Peak District.

A tiny chapel perched along a 14th-century bridge.

This historic textile mill has been repurposed as a shopping outlet, which houses a textile museum that celebrates its industrial past.

Though much of the castle was robbed of its stones, the underlying earthworks are among the best-preserved in England.