This is a two-fer since I couldn't decide: 'The Secret Garden' (1910) and 'The Secret Life of Bees' (2001). Both of these books touch a very special place in my heart and in my life. They both speak to me of the goodness of people.
Now that my back garden is completely enclosed, my kids call it my fortress. And their old play fort is still standing. But it is now my 'secret garden'. I walk through the gates in summer and am in a world of color.
Both of these books have children as central characters. Their stories and the life-lessons they learn are endearing. And both books have been made into movies, if reading is not your thing.
Sleeping Bear Dunes National Lakeshore Another national treasure right here in my home state. It has been many years since I have visited, but I had a great time when I did. I was also much younger, lol. Here is a link to an email I just received from Pure Michigan talking about the dunes.