Visit Anna Sagar lake in the morning to enjoy sunrise. Then go to Dargah Sharif. After having lunch visit Adharai Din Ka Jhopra. Then must visit Taragarh Fort and witness the mesmerizing sunset from the top.
I was there last Jan. There is nothing to see. It would be better if you avoid this place. If you really want to go, then Ajmer Sharif Dargah is there which is very famous religious site. And too too crowded as well. Good luck