Western Bank Library is built in post-war modernism style. The building is resolutely rectangular, with an exterior of stone facings and plate glass. Its interior is constructed of reinforced concrete and steel, with marble stairways. It has large glass curtain walls run through the length of its reading room, offering views north across Weston Park's lake and grounds. Western Bank Library was described as "the best modern building in Sheffield" by architecture historian Nikolaus Pevsner.
