About 25 years ago I added an approximate 30'x35' two story addition to my house. The top floor is one open room with 10' side walls and a 14' high ceiling center. That is my main Trophy Room, but unfortunately, it wasn't big enough. I've expanded into my Living Room, and I have plans to remodel it with more wall space.
Here's some pics of my main Trophy Room.
Left side of the east wall...
Right side of the east wall. It includes a wet bar with a small refrigerator.
Left side of the south wall...
Right side of the south wall...
The center of the west wall...
The left side of the north wall...
And the left side of the north wall...