There are 48 planetariums across India. Alwar's new planetarium will serve as a new tourist attraction. Existing planetariums are located in cities such as Kolkata, Mumbai, New Delhi, Bengaluru, and Prayagraj. Asia's largest planetarium, the Birla Planetarium in Kolkata, is a single-storey circular structure designed in a distinctive Indian style, architecturally inspired by the Buddhist stupas of Sanchi.