Solarium, Jamnagar, Gujarat India

North of the city you find an intriguing curiosity, a medical facility called the Ranjit Institute of Poly-Radio Therapy or simply the Solarium. Built in the 1920s under Jam Ranjitsinhji with the supervision of French doctor Jean Saidman, it was one of three such facilities in the World. It was constructed so that the top floor could rotate to have direct sunlight through the day for treatment of skin diseases and even rheumatism and TB. The last physician who could operate the complicated system died and the facility was closed in 1996. It is closed to visitors but you might be able to ask in the office next door if someone would be kind enough to show you around. You can also ask about rumors of plans to open the facility once more.