JantarMantar in Varanasi is also main attraction for tourists and was built by Maharaja Jai Singh of Jaipur in 1737. This monument is an observatory and was outcome of great passion of Maharaja towards science and technology. This enormous building was formed with an aim to perform various accurate measurements like the local time, altitude of the place, for knowing eclipses and many more. The most amazing fact relevant to this monument is that it still gives you accurate measurements. This building is great source of attraction especially for scholars, engineers, architects, scientists and astronomers but don’t worry, if you are not among these, then also it will attract you!!