One of my Favorite arenas at Solaris is the Marik arena also known as "The Factory". Playing this Arena on a map can get a little confusing as to line of sight and where you can actually move to.
Got a good start on the two main buildings of "The Factory".
You can see them in the video below.
Still need to finish the 3rd main building. Then Paint them all up.
Built it totally out of scrap styrofoam and left over tile board from a bathroom remodel project. Only real cost was the foam cutter and the hot glue...Can't beat that price.