The Siam Cultural Park in Ratchaburi Province is not often visited by foreign tourists which is a shame as they are missing out on a lot. Like the nearby Human Imagery Museum, they have fibre glass models of important figures in Thai and Asian history. The park also showcases important Buddha images and different Thai architectural styles.
There is a coffee shop and food is available at a very reasonable price on site.
I would think that most of the attraction would be accessible for the disabled.
The attraction does get quite busy weekends and public holidays.