Use a cardboard box and glue. Find on the internet the dimensions of the Palace, and a picture of it (Like a floor plan, but just use the outside walls). Make 1 inch equal to 1 or 2 feet of the real dimensions (so if the real building is 25 Feet wide and 20 feet long, your model will be 25 inches by 20 inches) It is a pretty big building so you might have to make 1 inch equal 10 feet in order to make sure your model is less than 2ft by 2ft. The water I am not sure how you would use, unless to make a model of a fountain or pool on the property.
