Happy Valley () is an upper-income residential area in Hong Kong, located on Hong Kong Island. The area is bordered by Caroline Hill to the east, Jardine's Lookout to the south, Morrison Hill to the west, and Causeway Bay to the north. Administratively, it is part of Wan Chai District. Happy Valley is considered as an area surrounded by Caroline Hill Road to the east, Tai Hang Road and Stubbs Road to the south, Canal Road Flyover and westbound section of Wong Nai Chung Road to the west, and Leighton Road to the north. The area is home to the Happy Valley Racecourse, Hong Kong Racing Museum, Hong Kong Jockey Club Happy Valley Clubhouse, Hong Kong Sanatorium & Hospital, Hong Kong Adventist Hospital – Stubbs Road, home to a number of sports clubs including Valley RFC rugby club, Craigengower Cricket Club, Hong Kong FC football club, and a number of cemeteries including the Hong Kong Cemetery. History The area now known as Happy Valley was formerly known as Wong Nai Chung Valley, sometimes known as Wong Nai Chung Kuk () or Wong Nai Chung Valley because of the (, lit. yellow mud stream) that leads into the area, where the Wong Nai Chung referred to is a mud-filled river collecting waters from the Wong Nai Chung Gap and surrounding area. The river nourished the rice paddies until the construction of Happy Valley Racecourse in 1846. In early 1840, the British Army set a military camp in the area. However, the camp was later closed due to the increasing number of soldiers succumbing to malaria. The cause of malaria was unknown at the time and the soldiers apparently suffered a then-unknown fever. Early settlers had suggested the area to be used as a business centre, but the idea was shelved due to the valley's marshy environment, which was causing fatal diseases. The death rate in the area and Victoria City was high in the early colonial days, and the valley became a burial ground for the dead. As a result, the valley was renamed Happy Valley, a common euphemism for cemeteries. In 1846, the British felt that the valley terrain was ideal for horse-racing, and thus cleared the paddy fields and developed the Happy Valley Racecourse. For this, the Wong Nai Chung river was redirected to the Bowrington Canal, known as Ngo Keng Kan () locally, concurrent with the reclamation of