Modern/Medieval Park (Center and Fort/Castle)

So I am currently working on a Modern/Medieval Park with a Fort/Playground, a path, gazebo, and a picnic area. I was limited to a plot of land so what I did was completely flatten out the whole thing and center the building I built in the middle. The four corners are where the builds will go, I only have the fort done. I flattened the whole thing so I can take out the naturally generated Trees and Terrain and custom build my own Trees and Terrain. Hopefully you guys like what I am doing, I will post more soon.