The people also built a very peculiar monument , the Fountain of the 99 Spouts ( Fontana delle 99 Cannelle ) . That is also why number 99 is so important in the architecture of L'Aquila , and a very peculiar monument , the Fountain of the 99 Spouts ( Fontana delle 99 Cannelle ) , was given its name to celebrate the ancient origin of the town .