Around Chiang Mai
When you leave the city of Chiang Mai, you're very likely to end up in the mountains very soon, because of Chiang Mai's location in the valley. Most of the elephant, monkey, snake and orchid farms or shows are outside the city limits, but still very accessible with public transportation or tour guides.
You'll also enjoy the factories, where they make or process umbrellas, silver, and gems. Many of these places are conveniently placed on one road.