A great Indian masterpiece The Jantar Mantar is part of the series of five astrological buildings that were constructed by Maharajah Jai Singh II of Jaipur in West Central India. The largest of five similar structures not only showcases the impressive architectural skills of the Indian people but also shows their scientific prowess.

This remarkable structure consists of 14 geometrical devices which were used for various purposes such as measuring time, predicting the behaviour of planets, forecasting the weather and identifying extraterrestrial altitude. The structures are all made of marble and stone while each instrument features its own engravings and astronomical scale. During the sites heyday these were used extensively, though this is no longer the case as the entire area has become an extremely popular tourist attraction.

Each of these structures served their own unique purpose. The largest of these is the Jantar Mantar which was used to accurately measure the time of the day. Another important structure that can be found here is the Jai Prakash which displays the suns position during the time of equinox while the Ram Yantra is a tool that comprises of two different buildings that are combined together to serve one purpose which is to measure the altitude of the stars. The Misha Yantra is another interesting structure that can be found here and is used to measure the shortest and longest day in the year.

While not being of practical use as during its original construction, the Jantar Mantar is still used to forecast the weather for nearby farmers. Travellers wanting to visit this fascinating destination will find staying in a Delhi hotel that is located nearby such as Shangri-La's - Eros Hotel, New Delhi provides convenient access to the Jantar Mantar.