text: what year was the leaning tower completed?   it was 1360.. according to source.  also, look at this time-line  year  1173 commencement of works on 9 august of the       year 1173.   1182 establishment of the "opera campanilis petrarum       sancte marie" (stone works of the bell tower of       saint mary).   1185 probable interruption at the height of the 4th       order.   1198 the presence of a bell-ringer at the tower is       documented - a sign that the building can hold       at least one bell, partially fulfilling the       purpose for which it was intended.   1231 building work, probably taken up again in the       first decades of the century, proceeds. a       workshop in which marble for the tower is       worked is documented.   1233 oath of the worker benato bottici: in the       ceremony of investiture he pledges to be       "solicitous and attentive in the building       of the bell tower of the church, according       to the means of the opera".   1260 giovanni di simone, whose presence was       documented at the opera del duomo from 1260       and, from 1267 as master builder, intervenes       in the construction of the tower. building       proceeds up to the seventh order, where a       correction of the axial inclination of the       building is made, which is no longer       rectilinear, having assumed a concave form.   1278 further suspension of building work.   1292 giovanni pisano measures the inclination       of the tower with a plumb line.   1360 after almost a century of inactivity,       tommaso pisano completes the construction,       erecting the belfry and making the last       important geometric correction of the structure.   -the end-