Group Goetz Architects (GGA) Visit us at www.gga.com, is an internationally recognized multidisciplinary architectural firm headquartered in Washington, DC. GGA provides a full spectrum of professional services for the built environment ranging from master and urban planning to architecture and interior design to graphic and communication services.GGA has established support offices and strategic partnerships with other architectural firms to complement and augment its capabilities both nationally and internationally. The partnerships and support offices allow GGA to provide the highest quality services throughout the United States, China and the UK.