Here's a view of the tower from right next to it:
The U.S. Forest Service closed the tower back in 1992, but Brad Eells and the San Diego - Riverside Chapter of the Forest Fire Lookout Association, Inc. have recently been leading the effort to restore the High Point Tower and re-staff it with volunteers. Brad just sent me this photo, taken in the 1970s, of the view from inside the High Point tower:
Image credit: Cleveland National Forest
Click to embiggen the photo of Towerman Saenz. Over his shoulder you can see the domes of the 48" and 200" telescopes. The dome for the 200" seems to be open in this shot. To the left of them is the dome for the 18" telescope.
I hear that in a few months there may be a webcam installed on the High Point Tower. If so, I'll post here to let everyone know. Here's my post from last year with a photo taken at High Point looking down at the observatory.