In my local city, there's a set of gardens that's quite famous locally. We actually visited for the first time in May. It was a nice cool spring day, and we needed some fresh air. I'm not the greatest person to appreciate plants and flowers, but I figured Daisy would enjoy the nature too.
The place is a mixture of obvious gardens people have planted, and a big forest of trails and things to see. From what I read about the garden's history, it all used to be land next to a city sewer. Quite impressive that they turned it into what it is today.
My favorite parts were the little rivers. I can't tell if that water flows naturally but it sure does seem like it.
They even had a mini-waterfall.