Rather than having horizontal "hall style" dorms like in other residences, Brown college has vertical style halls known as "portals". There are twelve portals total, with each portal housing up to twenty-four residents, not including the possible four basement rooms. Each portal in Brown is connected through underground tunnels, though it's really just one long tunnel. There are three areas that each portal is separated into, which are either the Quad, Anti-Quad, or Gildergreen. Each of these areas are home to four portals, and each area has its own advantages, disadvantages, and characteristics.