The Arizona Inn is a hotel in Tucson, Arizona. It was built in 1930–31 by Isabella Greenway, who became Arizona's first female representative to the U.S. Congress in 1932. The Spanish Colonial Revival main building was designed by Tucson architect Merritt Starkweather. The entire 14-acre (5.7 ha) complex comprises 25 structures, of which 21 contribute to the historic district. The buildings are pink stuccoed masonry structures with blue details, arranged in landscaped gardens with more pink stucco walls. The gardens were designed by landscape architect James Oliphant. Small structures surround the gardens, which are mainly landscaped with native Arizona plants.