If you need good coffee, head to "C Scheme" for Blue Tokai Coffee and Curious Life Coffee Roasters.
I couldn't work out why anyone would want to see how rich kings dressed for their polo and billiards game and pay 200 for the pleasure of doing so. I would have avoided City Palace had I known. Could have had another half decent coffee instead.
Right across the street from City Palace is Jantar Mantar, a park with a collection of astronomical instruments for observing sun, constellations and tracking their position in the sky. The explanatory plaque next to each instrument is rather technical, but intriguing nonetheless. Entry is 50 for Indians.