My siblings and I are concerned about my fathers dementia. Where do we start in finding him a center for activities?

he needs to feel useful to someone or something...they live in the west palm beach are in Florida and we are looking for a center for him to participate in some sort of activities.....he loves too talk he loves children he was a wonderful artist...any help in a direction would be greatly appreciated...need to put a little spark back in this wonderful man! Thank you