This is the Climatron, a climate control geodesic dome greenhouse, which has been hailed as the most advanced botanical display house in the world. The 70-foot high aluminum and Plexiglas structure is the centerpiece of the Missouri Botanical Garden in St. Louis. Multiple scientifically controlled climates in the dome provide a variety of tropical and semi-tropical displays.

Photo is dated 1961.

Photo measures 10 x 8.25 inches.