This museum is structured for appointed time, no exceptions to getting in if late. The explanation was to give visitors a chance to self guide after seeing intro video and not be distracted by other visitors crowding for views. Appreciated the explanation. The museum is a labor of love to educate the public about turquoise. Gem quality vs other type of turquoise many people buy from numerous vendors. The best info is to know where the turquoise comes from authentically certified or verified from reputable dealer when buying gem quality for certain and other type turquoise also! The mansion museum is stunning. Looks more like a movie set. Very well organized. There are seats along the way to rest while you’re viewing. Overall this is a worthwhile stop in a city that has limited educational options.