First road tunnel in England.

Frida Kahlo's childhood home, now a museum of her life and works.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

Eclectic final resting place of the controversial explorer.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

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

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

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

A relic of Victorian grandeur hides beneath a busy South London road.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.