Hillsong Church is a Pentecostal megachurch affiliated with Australian Christian Churches and located in Sydney, Australia. The church’s senior pastors, Brian and Bobbie Houston, began the church in 1983 as the Hills Christian Life Centre in Baulkham Hills. Hills Christian Life Centre later merged with Sydney Christian Life Centre at Waterloo. Over 20,000 people attend services each week.   While headquartered at its Hills campus in Baulkham Hills' Norwest Business Park in the Hills District, Hillsong is a multi-site church with another congregation, designated the City campus, located in Waterloo, near Sydney's central business district. In 2009, a third Sydney campus, South West, located in Campbelltown and a fourth interstate campus, the Brisbane campus in Mount Gravatt, were added. Apart from the four main campuses, Hillsong Church currently has 15 extension services across Sydney. These extension services are based on either location or culture and rely on Hillsong Church for support and leadership. Hillsong Church's international offshoots include Hillsong Church London, in the United Kingdom, Hillsong Church Kiev in Ukraine, Hillsong Church Cape Town in South Africa and Hillsong Church Stockholm in Sweden. Hillsong services are also held in Paris, Berlin, Amsterdam and Moscow. In March 2010, Hillsong announced plans for a new church in New York, United States. Hillsong Music has topped Australian charts, with albums achieving gold and platinum sales status. Hillsong is known internationally through its teaching, album sales, and the annual Hillsong Conference, which attracts over 28,000 people. The Hillsong Television program is seen in over 160 countries and Hillsong International Leadership College is attended by over 900 students.