What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

This ancient Egyptian obelisk still bears the wounds of World War I.

It's a mystery why these remains were found with no traces of their bodies in sight.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

This knockout museum lies in a sleepy corner of London.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

A faded reminder of what was once a common sight in London during the Blitz.

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

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

The plunge pool is a surviving relic of a rowdy royal residence.

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.

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

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

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

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

The commemorative stone column conceals a secret laboratory.

An architectural oddity hides in plain sight on this iconic London bridge.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

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

The taxidermied remains of a once-great parrot.

A quiet memorial to those who died saving others in the heart of the City of London.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.