The university's campus in Odense is considered the main campus of the University of Southern Denmark, both because of its relative size and because the central administration of the university is situated there. Being an epitome of Danish functionalist architecture, the campus has been nicknamed "Rustenborg" (which roughly translates as "The Rusty Castle") by students and staff, because it is built from gray concrete slabs clad with weathering steel, in an early architectural use of that material. Its architecture has also given rise to other nicknames and slang expressions among students and staff. For instance, the administrative block goes by the name of "Førerbunkeren" (""Führerbunker""), referring to the architectural similarities between the university building and a stereotypical military building. The students' magazine is simply called "Rust".