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

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

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

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

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

An incarceration museum on the spot of possibly the oldest prison in England.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

A friendly pub with a sordid past in cock fighting.

The largest of London's subterranean rivers and once a mad, bad center of London life.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

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.

The taxidermied remains of a once-great parrot.

Dictionary Johnson’s favorite feline.

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

An unusual round church in London with a Templar past.

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

This Underground station has been a popular filming location for decades, even before it closed.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

This house's itty bitty size means no humans allowed.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.