The Tudor-style cottage in the middle of the square is not quite what it seems.

Ship-sized kinetic sculptural fantasy.

The secret wartime bunker built on the platforms of an abandoned Tube station.

The ritual has been performed uninterrupted for nearly 700 years.

The last four extravagant street signs of London's historic banking street.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

This statue of one of the engineers who created the London Underground hides a ventilation shaft for the tube lines that run under the street.

These Victorian era devil sculptures were designed to spite a local vicar.

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

A living memorial to the trees London lost during the Great Storm of 1987.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

This 1920s Dutch barge is now a floating bookstore.

This coffee shop lies hidden beneath a historic church.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

Sumptous memorial to a controversial independence.

A huge monument to a bizarre book written by Turkmenistan’s longstanding dictator.

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

A dictator's gold statue once rotated to face the sun on a 75-meter high marble tower.

This famed Silk Road oasis was one of the largest cities in the world before it was destroyed by a Mongol horde.

A fiery crater has been burning in the Karakum Desert since 1971.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.