Jantar Mantar Jantar Mantar is one of the most popular places to visit in Delhi. This UNESCO World Heritage Site houses the equinoctial sundial that can measure the time of the day based on the sun’s movements. There are a total of 13 astronomy architectural instruments here and you can spend a couple of hours enjoying their precision and build. 9:00 AM to 7:00 PM on all days Timings:  Indians – ₹5 Entrance Fee:  Non-Indians – ₹100  Nearest Metro Station: Rajiv Chowk Metro Station 