The architecture of Hong Kong is extremely varied and diverse. Due to the lack of available space, few historical buildings remain in the urban areas of Hong Kong. However, Hong Kong has become a centre for modern architecture as older buildings are cleared away to make space for newer, larger buildings. Historically, the demand for high-end buildings has been in and around Central. After decades of development, Central has become a district with many distinct tall business buildings. These buildings comprise the skyline along the coast of the Victoria Harbour, which is a famous tourist attraction in Hong Kong. Hong Kong's best-known building is probably Ieoh Ming Pei's Bank of China Tower.   Predating the Bank of China Tower, the HSBC Headquarters Building was finished in 1985 as the third incarnation of the HSBC headquarters on the site. This building is also featured on many of Hong Kong's banknotes. One of the largest construction projects in Hong Kong has been the new Hong Kong International Airport on Chek Lap Kok near Lantau, which is the most extensive single civil engineering project ever undertaken.