Kuala Lumpur is the capital and the second largest city in Malaysia by population. The city proper, making up an area of 243 km2 (94 sq mi), has a population of 1.4 million as of 2010. It is the fastest growing metropolitan region in the country, in terms of population and economy. Rated as an alpha world city, Kuala Lumpur is the cultural, financial and economic centre of Malaysia due to its position as the capital as well as being a primate city. It is an enclave within the state of Selangor, on the central west coast of Peninsular Malaysia. Since the 1990s, the city has played host to many international sporting, political and cultural events including the 1998 Commonwealth Games and the Formula One World Championship. In addition, Kuala Lumpur is home to the tallest twin buildings in the world, the Petronas Twin Towers, which have become an iconic symbol of Malaysia’s futuristic developments.