The University of Guelph campus is a blend of old and new buildings. Five buildings date back to the 19th century: Alumni House, Drew Hall, the President's House, the President's Garage, and Raithby House. Several other significant buildings were constructed prior to World War I, including the Bullring, Zavitz Hall, and both the Macdonald Institute and Macdonald Hall. The current Johnston Hall, perhaps the most recognizable building on campus, was built in the 1930s but sits on the same site as the previous Johnston Hall which had been built in the early 1870s.