A secret meeting in this small cottage changed the course of British history.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

An unusually shaped lighthouse with origins rooted in heartbreak.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

A 15th-century former coaching inn forms the implausibly grand entrance to a 1980s shopping mall.

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

A little-known castle set in a nature reserve.

Cascading waterfalls mark the gateway to the ancient burial place of Clan Macnab.

The English Civil War began right here in 1642.

Journey through one of the oldest industrial sites in Scotland.

This uniquely shaped rock formation is one of Scotland's most iconic mountains and gives spectacular views in all directions.

80 years of the Battle of Peasholm on a small English lake.

A collection of throne-inspired sculptures dot the landscape of Wincobank.

The oldest natural aquarium in the United Kingdom.

Although it appears much older, this castle-like tower is actually a Georgian-era folly.

A long-abandoned relic of World War II.

Scars from the English Civil War mar this medieval sanctuary.

An 18th-century viewpoint across the surrounding highlands.

The remnants of a facade from a 19th-century market stall emporium.

This picturesque lighthouse at the edge of the Irish Sea looks like a giant stone pencil.

The ruins of a 12th-century Cistercian monastery can be found alongside World War II tank traps and pillboxes.

A rare example of this century-old British tank stands near the center of town in Ashford.

A well-studied colony of endangered bats roosts in this abandoned Victorian Gothic mansion.

A series of idealized caves carved to entertain guests.