Regarding the differences between the three castles in Jaipur, India, I need help identifying which one the one in the picture belongs to.

There are three ancient forts in the northern suburbs of Jaipur. Nahargarh Fort is close to the city, and Amber Fort and Jaigarh Fort are in a small town called Amer (Amber) more than ten kilometers away from the city. On a mountain next to the town. On the way to Amber Fort, you can see the Water Palace (Jal Mahal) in the lake, which is not open for tours.

1. Route: A one-day tour is provided for reference only: Take a bus in the morning (there is a bus to Amber Fort in front of the Palace of Winds, only a dozen rupees) to Amber Fort, and then visit Amber Fort Continue climbing up the mountain to Jaigarh Fort.

So the picture you posted is of Jaigarh Fort.

Hope this helps.