Ganza Park existed within the Historical District of Estalle, which is a city situated on Estalle Island of the planet Procopia. This park was a sizable protected area featuring rock formations, flower gardens, gently sloping hills, and small clusters of trees. During the era of the Galactic Civil War, this location represented some of the most pristine and highly prized land on Estalle Island. A prominent tea house, known as the Greenhouse, had been established inside the park by this period. The tea house, offering scenic views of the sea, was regarded as a key attraction of the protected land.
The initial reference to Ganza Park appeared in the campaign guide included with Lords of the Expanse. This 1997 supplement for Star Wars: The Roleplaying Game by West End Games was authored by Paul Sudlow and Chris Doyle.