Our Grant campsite was spectacular with excellent spacing of sites, trees for shade and isolation, a lake, quiet campers, and a visitor center that had the best bear exhibit we've seen anywhere. A campground on the north shore of the lake was closed to tent campers due to the proximity of grizzly bear habitat. Unfortunately, perhaps fortunately, we never saw a grizzly. Eventually, some of us saw a black bear at Grand Tetons while hiking but no bears were sighted at Yellowstone. By restricting the availability of food in campgrounds, it seems that the NPS has forced the bears back to their natural habitat and away from potentially ugly confrontations with people.
Backpackers still have to be wary.
T he natural highlights of our geyser hikes were Grand Prismatic Spring and Old Faithful which was faithful. The Old Faithful Inn was a great place to watch people and read a paper on a rainy day. The lobby is a must see experience, a definite highlight by itself. The design of this hotel reminded us of the El Tovar on the rim of the Grand Canyon. Both have a 1920's or 1930's grand hotel elegance and have been maintained as they were originally built.