Scientology contribute a proportion of their income and comply with the Religious Technology Center (RTC) and its standards. Operating Thetan levels are offered only at Scientology's Advanced Organizations (Los Angeles, Sydney, East Grinstead and Copenhagen). The Flag Service Organization in Clearwater, Florida offers OT levels VI and VII. The Scientology ship "Freewinds" offers OT VIII. In 1955, Hubbard created a list of 63 celebrities targeted for conversion to Scientology. In a church policy letter in 1973, L. Ron Hubbard wrote, "The purpose of [the] Celebrity Centre is, to forward the expansion and popularization of Scientology through the arts." Scientology operates eight
Church of Scientology Church of Scientology International is in Los Angeles, California, 6331 Hollywood Blvd, in the Hollywood Guaranty Building. The Church of Scientology also has several major headquarters, including: Hubbard moved to England shortly after founding Scientology, where he oversaw its worldwide development from an office in London for most of the 1950s. In 1959, he bought Saint Hill Manor, a Georgian manor house near the Sussex town of East Grinstead. During Hubbard's years at Saint Hill, he traveled extensively, providing lectures and training in Australia, South Africa in the United States, and developing materials that would eventually become Scientology's "core systematic