Edinburgh has a fascinating 'Underground City', much of which is open to
the public. It is made up of many different aspects, with a turbulent
and intriguing past stretching back hundreds of years. Features include
hidden passages and cellars, ancient buried streets like Marlyn's Wynd
and Mary King's Close (sealed after an outbreak of plague), castle
dungeons and escape tunnels, a warren of vaults and chambers under
Edinburgh's mighty bridges, abandoned or repurposed rail tunnels, and
anomalies like the strange subterranean dwelling of Gilmerton Cove.
Award-winning author and historian Jan-Andrew Henderson explores the
legendary world beneath the streets and locations of Edinburgh in this
pictorial guide.