Jantar Mantar is one of the top attractions of Delhi. It draws a stream of visitors all round the year. With hotels of Delhi you can have the glimpse of the astronomical advancement India had made in ancient period.

The famous 18th century astronomer king and the founder of the Pink city of Jaipur, Sawai Jai Singh, built the first of his five astronomical observatories across India.

The observatories are known as Jantar Mantar which derives it name from the corruptions of the words 'yantra' (instrument) 'mantra' (formula) over the period.

The Jantar Mantar at Delhi is located on Sansad Marg between Connaught Place and Rashtrapati Bhavan. It is the largest and the best preserved compared to the other four open-air observatories which were built by Sawai jai Singh in Varanasi, Jaipur, Mathura and Ujjain.

Vast red and white sloping stone structures hover over palm trees and neat flower beds - The giant sundials are vast red and white sloping stone structures hover over palm trees and neat flower beds. They cast the shadows, which were formerly used to calculate time, lunar and solar calendars, time as wells astrological movements, all with an incredible degree of accuracy.