Of all the National Parks in the US, Yellowstone has got to be one of the biggest crown jewels of them all. Every inch of this park has something amazing to see - geysers, hot pots, diverse animal wildlife, so many kinds of plants and flowers and grasses, majestic mountains, vast and clear lakes with bustling life - Yellowstone is one of the ultimate national park experiences of a lifetime.
Regardless of whether or not you choose to go hiking, go prepared as if you are because there is so much to see and a ton of walking to get there. Have and drink plenty of water wear good shoes, come with sunscreen and hats and the proper clothes. And leave the animals alone!! They may be used to the presence of us humans there, but they have big personal bubbles and they absolutely will tell you when you've popped it. The people who work with the national park service are good about sending you a different direction if there's an animal on the trails, and listen to them when they tell you to go around! These animals are gorgeous but they don't mess around.
In addition to that, stay on designated trails! If you step off the path you don't risk just damaging wildlife but you also risk finding a secret little hole where a hot pot is brewing. If it's not on the boardwalk, don't step on it.
With safety tips in mind, this really is one of the most incredible places to visit. Go see and enjoy one of the most beautiful places on earth.