It's got 16 screens and both an upstairs and a downstairs. We're just using the street-level (upstairs) section where the gallery is. At the end of the video you can see there's a dog-leg to the right. There's more space round there, with the remainder of the screens (for those of you who are counting them). It's a reasonably size - but certainly not a large art gallery. We'd have needed a lot more maps to fill a big one!