1566 – Bridge, Athlone, Co. Westmeath The building of the nine-arched Elizabethan bridge of Athlone in 1566, was a prelude to the establishment of the presidency of Connacht in 1569.
1566 – Santa Maria in Traspontina, Rome, Italy Architect: Giovanni Sallustio Peruzzi Designs by Giovanni Sallustio Peruzzi (with contributions by Ottavio Mascherino and Francesco Peparelli) for a replacement church were in place by 1566,