The Jantamanta Observatory is located just south of Jaipur's Connaught Square, just across from the city palace in Jaipur. Two attractions can be visited together. It is an orange complex and one of the observatories built by Jaipur's Prince Jay Singh II. Most of the instruments here are used to measure the motion of the celestial body and predict the eclipse, and they are still in use today. There are instruments that can measure the constellations, but unfortunately there is no sun on the day, and they cannot be verified.