While some have become famous tourist destinations, others have been long forgotten and left uninhabited for decades.
6. Waverley Vaults
The vast ad labyrinthine Waverley vaults were built during the redevelopment of Waverley Station by the North British Railway Company in the mid-1890s. Previously used for storage by nearby traders at Market Street, the vaults, which effectively support a large section of Waverley Station, now lie mostly empty and unused. Photo: Colin Hattersley
7. Barnton Quarry nuclear bunker
Buried 100 feet beneath Corstorphine Hill lies a chilling remnant of the Cold War: a secret bunker equipped to house hundreds of state and military officials in the event of nuclear fallout. The 1950s-built bunker, one of the only surviving types in the UK, was used to receive intelligence from radar stations across Scotland. Photo: Ian Georgeson
8. Alnwickhill Waterworks
Situated below homes at Liberton Gardens and Alnwickhill Road, the giant brick-built storage tank at Alnwickhill Waterworks dates back to 1875. Covering a space around half the size of Charlotte Square, the 15-million gallon tank once stored the city's water. Photo: Contributed