Modena. Construction of the Citadel in the current area between Viale Storchi, Via Monte Kosica, and Via Montecuccoli. Massive poplar piles and masonry foundations were erected to make the structure sturdy. 200 workers were employed. The pentagonal complex was completed in 1642. Each face measures 310 meters, while the faces of the bastions are 91 meters. A deep canal also runs around the Citadel.
