The Sungai Buloh Leprosarium, officially known as the National Leprosy Control Centre (NLCC), is located at the valley of Bukit Lagong in the state of Selangor, 25km from the capital city of Malaysia - Kuala Lumpur. It was completed in 1930. The Sungai Buloh Leprosarium has been known as one of the exceptional models in the liberation of leprosy institutions in the 20th century and also one of best treatment centers for leprosy. On top of this, the Sungai Buloh Leprosarium was also one of the key leprosy research center in the globe where some of its research, trials and experiments have greatly contributed to the treatment of the disease. The Leprosarium originally covered an area of over 562 acres, comprising more than 600 buildings in three sections. At its peak period, the patients numbered 2,440. Hence, the Sungai Buloh Leprosarium is the biggest leprosarium in the British Empire in terms of the number of patients and empirically, it was deemed as the second biggest in the world after the Culion Leprosarium in the Philippines.