A church of bones, decorated with 40,000 human skeletons.

The mystery of the Putim Ossuary involves a tricorn hat.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

This tallest folly in the world began its life as an elaborate factory chimney.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

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

Dictionary Johnson’s favorite feline.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A tongue-in-cheek arcade where the games are based on everyday life.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A cluttered and astounding collection of antiquities and curiosities.

The anatomical-pathological collection of a man who changed surgery.

This inn of the court provides a fascinating window into London’s legal and architectural history.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Explore nearly 400 years of English middle-class home life.

At this small museum, visitors can view artifacts from the only battlefield in London during the War of the Roses.

A mineral spring that became all the rage in 17th-century England.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.