Great outing for butterflies and kids! We have visited this place twice in the last 6 years. The entrance fee is cheap (60bht by memory) and it provides a nice, natural experience away from the hectic Chiang Mai traffic. My small children love the butterflies and the orchids are simply stunning. The drive out is about half an hour and you probably would not spend more than an hour in the facility. Definitely worth the trip for the novelty aspect!