Pls go to jodhpur. Apart from what others have said, latest attraction is the new High court building which is the biggest and newest court premises in India. it will give you a look of Parliament of New Delhi. Near Kaylana Lake, there is Machia Safari Park if you are interested in Biology/Zoology. you may also visit the science park. There is Sumer Museum in Umaid Garden. Do have a walk in the old city markets. You will definitely enjoy the food, local fast food like mirchi bada, samosa, kachori and sweets of Jodhpur. That's guaranteed.