This is a memorial made in the rememberence of Maharaja Jaswant.
The place is not very far from the main city.You can plan your trip such that first you visit this place then shopping or other historical location.
This winter I will recommend you to visit Jodhpur and insist, that you see this place. If you are student of arts/sketching I can say this site is an artists delight, specially if you draw it at different times of the day, you will witness magical interaction between light and white marble monument. Though some tourist visit this place just for the hack of it, butI recommend, give yourself time to feel the magic and beauty of the place, you will never regret.
I can claim you will cherish visit to this place for rest of your life.