On completion of the planning stage in 1985, the Conservancy launched its first campaign[1] and mapped out a 15-year restoration plan.[213] Over the next several years, the campaign restored landmarks in the southern part of the park, such as Grand Army Plaza[214] and the police station at the 86th Street transverse;[215] while Conservatory Garden in the northeastern corner of the park was restored to a design by Lynden B. Miller.[216][217][218] Real estate developer Donald Trump renovated the Wollman Rink in 1987 after plans to renovate it were delayed repeatedly.[219] The following year, the Zoo reopened after a $35 million, four-year renovation.[220]