It was later purchased by the Glasgow Corporation in 1927 and converted into a hospital.

See the ruined Lennox Castle near Glasgow were Lulu was born

Lennox Castle is located close to Lennoxtown in East Dunbartonshire (Image: Getty Images)

The BBC says that by the 1980s, standards had gotten so bad that a study by the British Medical Journal found residents to be dangerously underweight and malnourished.

Alasdair Sim, the hospital’s medical director, even said in 1986 that he had “never worked in a worse pit”.

The infamous hospital at Lennox Castle closed in 2002 (Image: Getty Images)

In 2002, the hospital closed down, a move that reflected the changing attitudes around housing people with learning disabilities within the community.

Between the 1940s and 1960s, part of the castle was also a maternity hospital and was the birthplace of a number of famous faces.

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These include beloved Scottish singer Lulu, who sang hit songs like Bang-a-Bang and Shout, as well as footballer John Brown, who played for teams like Rangers FC.

Nowadays, the castle is still a category A listed building despite suffering from a fire in 2008.

Part of the grounds was converted into Celtic F.C.’s Lennoxtown Training Centre, with other parts towards the Campsie-side village becoming a long-term residential development.