This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

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

This historic building displays the remains of a victim of the devastating 14th-century plague.

High-end antique collection housed in a centuries-old church.

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

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

The commemorative stone column conceals a secret laboratory.

The fences outside some of South London's estates are made from recycled World War II stretchers.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

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

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

These ornate arches show how the course of the River Thames has changed.

A historic hill of tall tales, with one rather special tree.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

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

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

The ritual has been performed uninterrupted for nearly 700 years.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

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

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

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

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.