Brisbane City Council’s Sir Thomas Brisbane Planetarium opened in 1978. Located in the Brisbane Botanic Gardens Mt Coot-tha, the Planetarium is home to the Cosmic Skydome – a 12.5-metre-diameter projection dome. Visit the Planetarium to enjoy a show (including a tour of Brisbane’s night sky), and tour the Display Zone. The Planetarium also includes an observatory, galaxy gift shop, and sundial courtyard.