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

This modern labyrinth lies in the shadow of a ruined medieval castle.

In England, a barn-turned-wedding venue dates back to the 13th century.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.

Ancient barriers wrap around what was once an important stop along the Silk Road.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

What was once England's second-richest abbey is now a haunting ruin.

This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

Grab a cuppa at England's first and only domestic tea plantation.

This star-shaped artillery fort protected the mouth of the Thames from the 16th century to the Second World War.

A swath of France so devastated by war it is still forbidden to go there.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.

An eerie, little-known Neapolitan museum filled with preserved human remains.

For over 500 years this timbered alms house has provided a home for elderly residents of Coventry.

The worst flood disaster in Welsh history might have been a lot worse if it had not happened on movie night.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

This early 19th-century blast furnace only survived because it was a financial and technical failure.

Dark, eerie exhibits make for a surreal exploration of the subconscious.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

Peek inside restored planes at this off-the-beaten-path collection of aviation archaeology.