Try the Grand Canyon, it will knock you off your feet.
So after my high school graduation, I want to take a road trip or some kind of trip in general. Somewhere nice and beautiful in the summer months. Maybe a national park, mountain range, or lake. Honestly, I'm not sure where to go. So, any suggestions?
Can't beat driving throuogh Yellowstone National Park and down through the Tetons.
Come to Canada. The American $ is worth a lot against the Canadian dollar now. There's a lot of beautiful provincial parks to pick from. With the dollar being so low, I have a feeling that you should pre-book your camping spot early.
I think you should try Alabama and there are many places to visit. It has beautiful and awesome beaches. It is the best and wonderful destination for visiting.
I think you need to figure out how much money you have to do this and then work from your budget. A good rule of thumb is to find out how much money you have total to spend then reduc it by 10% and build a budget from there. (The 10% should cover any unplanned costs.) I hope you will be 18 when you graduate. Many places won't let you stay unless you are 18.