A network of concealed passageways lies within a busy London Underground station.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

London's largest outsider art museum.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

Taxidermied animals galore, by appointment only.

The cedar tree in Highgate Cemetery earned its title by accident.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A measuring mishap led to these artificial stone ladies losing their stomachs.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

An unassuming London park is actually a pilgrimage site for modern clowns.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

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

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

A decommissioned tube carriage within a London museum hosts a regular pop-up supper club.