The distinguished tower that Santa Catalina's Monastery proudly shows, was built in 1748 being President of the Council, the mother superior Sister Catalina de San José Barreda and Bishop Juan Bravo de Rivero.
Their steeple has four bells facing the streets that surround the monastery:
Facing Santa Catalina street (to the east) an old bell without any inscription.
Facing Ugarte street (to the south) it is the oldest bell with the inscription "Santa Catalina Ora Pronobis - 1749."
Facing Bolívar (to the west) there is one bell with the inscription "R.M. María de Villegas - 1787".