Based in Denver, Colo., Service Systems Associates offers its services towards management of retail and culinary departments at museums, botanic gardens, zoos and aquariums across the United States. Being in operations for over 20 years, the company is a leader in visitor service operations for cultural attractions, serving record number of guests annually. It offers its services under various categories, including retail, food/ catering services, zoo or aquarium rides and janitorial services, such as custodial services which include grounds detail, public exhibit floors, public restrooms and administrative offict detail.