Subdivisions in the gallery are achieved in part by large explanatory panels, similarly set on the diagonal, acting like half-walls to guide the visitor into differently-themed spaces. (And hooray for the copious information on those signs!)
A final nice touch is the use of antique wooden display cases outfitted with new blue risers. The risers are almost a sort of minimalist artwork in themselves, and certainly freshen up the older cases without being distracting.