We were privileged to visit the Bear Sanctuary yesterday and we were awed by what we found. It is probably the one of, if not the only places of its kind in the world. It is completely non-profit. It's a little out of the way and "in the rough", but well worth it. We spent almost 2 hours there.
When you arrive you pay a small fee ($7 per person). Approximately every 15 minutes a bus leaves the welcome center for the trek through the forest to the large viewing deck from which you will do all of you observation. When you arrive at the deck there you are dropped off at the foot of the steps which are protected from the bears and you climb up. It occurred to me that actually we humans were the ones in the cage from that point on. The bears below us were completely free. There were probably at least 30 out on that evening. The volunteers at the Sanctuary walk freely among them, distributing food and educating those up on deck. Some of the volunteers patrol the deck and give information or answer questions. They are dedicated people - they are not paid, the work they do is completely voluntary.
If you plan to visit you should visit the website for information. They open in the evenings. August is probably the best time to visit if possible. The bears go into an eating frenzy before hibernation and you may easily see 100 in one visit. This is a must see!
PS - You may want to eat before you go. Otherwise you will have to wait till you leave, because there's no food allowed past the welcome center.