
While Benjen Stark, the First Ranger, believes the Wall is the largest structure built by man, others say the Hightower in Oldtown is even taller, and that the Wall can allegedly be seen from the tower's top. Cells chiseled from the ice at the foot of the Wall are used as storerooms or prisons. They are sealed with ice and stone wherever castles have been abandoned or in times of danger. Tunnels have been cut through the Wall at each castle of the Night's Watch. The Wall sparkles from melting ice on sunny days, with rivulets of water being compared to weeping. The Wall shines blue and crystalline in sunlight, glimmers palely in moonlight, and glows pink and purple at dawn. Windblown dirt covers the Wall like film, and it often appears pale grey or dull white. The zig-zagging path of the western Wall becomes particularly notable on maps from Greyguard to the Shadow Tower, with a large southern bend at Greyguard itself. Thus there are some parts of the western Wall which are actually closer to 800 feet above sea level, technically the same elevation as the Hightower in Oldtown, though the height from the base is the same because these sections are built atop hills. This is because west of Castle Black the Wall runs through the foothills of the Frostfang mountains, and Bran the Builder tried to place the foundations on geographic heights whenever possible.

The Wall is straight like a sword from Castle Black to Eastwatch-by-the-Sea, but runs like a snake between Castle Black and the Shadow Tower. According to myth, there are old spells woven into the Wall, to strengthen it and keep creatures of a magical nature such as the Others from passing it. Led by Othell Yarwyck, the First Builder, the builders of the Watch monitor and repair the Wall. The top is wider in man places than the kingsroad, and crushed stone is spread on walkways to aid with footing. The top is wide enough for a dozen mounted knights to ride abreast and it is thicker at the base. It appears grey or blue depending on the weather and time of day.

It is made of solid ice, stone, and earth, and can be seen for miles round. The Wall stretches for three hundred miles and is approximately seven hundred feet tall. The Wall by Sabin Boykinov © Fantasy Flight Games
