Janta Mantar

#celebrateit Jantar Mantar was built in the 18th century by the astronomer Jai Sin II, the Maharaja. Among other things, the observatory in Jaipur is the largest compared to other observatories in India (Derri, Banaras, Ujain, and Matura), and observation continues today, about 300 years later. Height 27. Astronomical observators such as "Samrat Yantra", which is a huge sundial of 4 metres, which can measure accurate time in 2-second units, and "Rashi Valaya Yantra" facing 12 constellations remain, and were registered as a World Heritage Site in 2010.