The original 1936 Centennial Exposition era Dallas Horticulture building in Fair Park, with additions in 1955 and 1969, was renovated and redesigned by Oglesby Greene to accommodate Texas Discovery Garden's new mission and program needs for education, visitor services, exhibits, gift shop and year-round butterfly house and insectarium interactive exhibit.  The building now holds Texas Discovery Garden offices, research library, laboratory and classrooms for children.  The butterfly house is a multi level interactive visitor experience commencing at the upper level and spiraling from above the tree canopy down, through and below the tropical zones amidst myriads of international butterfly species. Interactive and instructional artwork is placed throughout the main hall, butterfly house and classroom to enrich the experience for adults and children alike.