Yosemite is beautiful. Most of the park lies in a valley between two towering mountains. Most of the camping, popular hiking, and restaurants are here. You can find giant sequoias here too! To truly enjoy this park you need to see a little bit of everything. One hike in the valley, one on the north side of the park, and one on the south side of the park.
It's the deepest lake in America! Which is shocking cause it's only five miles wide. You need to swim in this water to truly appreciate it. Bring some goggles and get ready to look into deep, dark, blue void.
Glacier is one of the hardest parks to navigate these days due to it's popularity. I winged the trip and still had a great time. I swam in Lake McDonald, hiked highline trail, and swam in Grinnell Glacier. All you need to do is get up and into the park before 6 am each day.
The Tetons should be at the top of everyones National Park list. The only downside is how busy it can get. So don't be like me and just show up. Make a reservation a couple weeks in advance to truly have the best time at this park.
They call it the Badlands for a reason. The landscape is rough haha. Fun to explore and climb the painted canyons, but not many long adventurous hikes here. Take it for what it is and enjoy your time here!