Near the city center, a squat battlement tower identifies the cathedral, in simple, early-19th-century, low-Gothic style. On the site of much older churches, it contains relics of Armagh's long history. Brian Boru, the High King (King of All Ireland) is buried here. In 1014, he drove the Vikings out of Ireland but was killed after the battle was won. Some memorials and tombs here are by important 18th-century sculptors such as Roubiliac and Rysbrack. The cathedral's atmospheric crypt is also open to visitors. Dating from the Middle Ages, this sanctuary was where law-abiding citizens safely stored their valuable goods. A few archbishops are buried here, too.