This antique prison is a tourist attraction with a sordid past.

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

400-year-old garden, restored to beauty.

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

On this headland lies a 19th-century lighthouse and historic gun battery.

The twists and turns of this serpentine maze are over 170 years old.

A 14th century castle built on the seat of a mighty giant.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

These picturesque ruins crumble beautifully into the ocean.

This stretch of the River Severn where large waves flow against the current is the birthplace of river surfing.

This former Welsh metal factory is now a lovely abandoned relic but was once one of the industry's world leaders.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

Stroll through Welsh history in a village of reconstructed structures.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

The longest and tallest aqueduct in Britain can actually be sailed across.

This ancient abbey now lies in majestic ruin behind a caravan park.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

This disused Cold War bunker has been restored to all of its early 60s glory.

Hundreds of huge, centuries-old horseshoes adorn the walls of this nontraditional 12th-century castle.

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

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

A remarkable medieval structure born from a 14th-century disaster.