Just outside of Nakhon Pathom, to the West of Bangkok, there is a popular wax museum called Thai Human Imagery Museum. Though, to be precise, they are fibre glass models as I guess wax ones would melt in this heat. There are various rooms with different themes. This one shows the Kings of the Chakri Dynasty. Many of the models are very realistic and you might find yourself talking to one sitting on the bench next to you.