Complex sentence: Cathedral City had a downtown revitalization program in the late 1990s, part of which was completed in 2005, called for a permanent building to have City hall, an IMAX/Mary Pickford movie theater complex, and a total of of new or remodeled stores.
Split into simpler sentences: Cathedral City had a downtown revitalization program in the late 1990s, part of which was completed in 2005. A new City Hall was built as was the IMAX/Mary Pickford movie theater complex, and a total of of new or remodeled stores.