Formal permission was obtained in 1930 from King George V to call the gardens the "Royal Botanical Gardens". At the same time as the proposal for the botanical gardens was under consideration, the City of Hamilton was undertaking an ambitious program of beautification on the nearby Burlington Heights. The North-Western Entrance to Hamilton project included an extensive set of gardens designed by the Toronto firm of Wilson, Bunnell and Borgstrom. Among these was the Rock Garden created by lining a 5.5 acre abandoned gravel pit with limestone from the Niagara Escarpment. In 1932 the Board of Park Management brought together the Burlington Heights gardens and the south shore of Cootes Paradise as Royal Botanical Gardens.