This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

Resonant stone, that has been played since prehistoric times.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

The UK's oldest theme park slowly slips away.

The Last Home of an Executed King.

The Isle of Wight’s “Island Line” serviced by former London Underground trains from the 1930s.

A house of bones — but nobody is quite sure to whom they belong.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

The world's oldest operational public pier railway has shuttled seagoing commuters from ship to shore since 1909.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

This colossal war machine is now a living museum dedicated to underwater warfare.

Two gilded cherubs perched on a church bell tower have been reminding visitors of the finitude of life since 1760.

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

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

England's most notorious suicide spot.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

This mysterious chalk figure of a horse has been recreated and restored for more than a century.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.