Streetdirectory.com Sembawang Hills Estate is located in Upper Thomson district. An estate beside Macritchie Reservoir, Upper Thomson is popular for Food and recreation. Here, you find good roti prata and golf clubs like Island Golf Course, a haven for businessmen. Recreation in Upper Thomson also caters to the disabled, who can go horseback riding at the Riding for the Disabled Association of Singapore. This is one of the many charity organizations in the district, alongside St. Theresa Home. Home owners also often come to the plant nurseries in Upper Thomson for flora and fauna to decorate your homes.