What we have here is a beautiful hot tub surround which is constructed almost entirely from cedar and has tinted plexiglass panels in the doors and windows. I guessed a rough height of 8' tall. This surround covers roughly 45' around the perimeter, which gives each wall a rough average length of 11.25'. The surround is currently dismantled into these parts:

8 Wall Panels with window track installed 9 Plexiglass roof panels, varying sizes, includes hardware. 8 track windows that include screens, Pair of sliding front doors with handles and tracks, 4 rounded corner panels, Front door panel measures 83"H x 81"W Trim package and headers are included.

As far as I can tell, you have everything you need to put this back together. There are a couple of wall panels that has some rotted corners that will need to be addressed.