Edwin Warner Park is awesome--the folks at the nature center are knowledgable, kind and generous. They go way out of their way to make everyone feel welcome and to help them find what they are looking for. They have a library that is open to the public--a bird blind --be sure to visit this--and an organic garden. The wildflowers are fantastic in the spring and the hiking trails are great--even though there are a lot of runners --this is true in most parks in nashville except for Radnor Lake--which is also a wonderful facility. I like the blue trail in Edwin Warner the best --it is about 3 miles. If you pack breakfast you can eat on the back porch of the nature center while watching the hummingbirds at their feeders and nuthatches--and enjoy the wildflower garden.
I must admit this is one of my favorite places in Nashville.