Late modern and postmodern architecture began to appear in the late-1990s and early-2000s. With the economic development, old buildings such as Bok House have been razed to make way for new ones. Buildings with all-glass shells exist throughout the city, with the most prominent examples being the Petronas Towers and Kuala Lumpur Convention Centre. Kuala Lumpur's central business district today has shifted around the Kuala Lumpur city centre (KLCC) where many new and tall buildings with modern and postmodern architecture fill the skyline. According to the World Tallest 50 Urban Agglomeration 2010 Projection by the Council on Tall Buildings and Urban Habitat, Kuala Lumpur was ranked 10th among cities to have most buildings above 100 metres with a combined height of 34,035 metres from its 244 high rise buildings.