13. Jantar Mantar, Jaipur
Jantar Mantar is the most famous historical site. It was listed in the year 2010 on the UNESCO world heritage list. It is the most popular tourist site that has a collection of 19 astronomical instruments built by Sawai Jai Singh II who was a famous Rajput king in Jaipur of Rajasthan. This is the best tourist attraction site that attracts people from all across the country. It is also the biggest in India out of all five Jantar Mantars available in India. You can reach Jantar Mantar via railway or bus service.