A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

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

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

A museum that chronicles the interesting and often dark history of the London docklands, once one of the major trading ports of the world.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

A relic from one of London's worst 19th-century slums.

This medieval church tower has maintained its clockworks since the 16th century.

A mysterious shape catches the eye in this 16th-century painting.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

A gallery specifically dedicated to the botanical illustrations of a remarkable traveling lady.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Murals of the wild parties once held on the frozen River Thames.

London's marvelous wildfowl reserve along the Thames.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The commemorative stone column conceals a secret laboratory.