MTR Corporation Limited engages in railway design, construction, operation, maintenance, and investment in Hong Kong, Australia, Mainland China, Macao, Sweden, and the United Kingdom. It operates through Hong Kong Transport Operations; Hong Kong Station Commercial Businesses; Hong Kong Property Rental and Management Businesses; Hong Kong Property Development; Mainland China and International Railway, Property Rental and Management Businesses; Mainland China Property Development; and Other Businesses segments. The company offers passenger operation and related services on the domestic mass transit railway system, the Airport Express, cross-boundary railway connection, light rail and bus feeder with railway system, and intercity railway transport. It is also involved in the letting of advertising, retail, and car parking spaces at railway stations; provision of mobile and fixed telecommunication, bandwidth, and data center services in railway and other premises; other commercial activities within the transport operations network; letting of office spaces; property management, development, and rental; construction, operation, and maintenance of mass transit railway systems; financing; investment in technologies; and cable car operation. In addition, the company offers the MTR academy to develop railway engineering and management professionals; railway consultancy and management; engineering and technology training; and Octopus, a contactless smartcard common payment system. MTR Corporation Limited was founded in 1975 and is headquartered in Kowloon Bay, Hong Kong.