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Werk San Mattia (1837-1843), in Verona, Italy.

After the formation of the Kingdom of Lombardy–Venetia in the early 19th century, the Habsburg empire extensively fortified the city of Verona, which became part of the Quadrilatero defensive system between the rivers Mincio and Adige.

San Mattia fort is located on a hilltop in the north of Verona. Built from 1837 to 1843 by Michael von Maly, it has the typical irregular shape of a mountain fort. It was armed with four 95 mm rifled muzzle loader guns as well as four smoothbore guns. In wartime, it was manned by 26 gunners and 342 infantrymen.

Bastion Santo Spirito (1836) in Verona, Italy.

After the formation of the Kingdom of Lombardy–Venetia in the early 19th century, the Habsburg empire extensively fortified the city of Verona, which became part of the Quadrilatero defensive system between the rivers Mincio and Adige.

Santo Spirito bastion in the south west of Verona has it's roots in the city walls built by the Scaligeri in the 1320s. In the 16th century, the site would see considerable rebuilding by the Republic of Venice, adapting the fortifications to the used of gunpowder. After destruction by the Napoleonic army, the bastion was once again rebuilt in 1836, this time by the Austrian empire and following the plans of Franz von Scholl.

Caponier of San Giorgio ravelin (1838-1840) in Verona, Italy.

After the formation of the Kingdom of Lombardy–Venetia in the early 19th century, the Habsburg empire extensively fortified the city of Verona, which became part of the Quadrilatero defensive system between the rivers Mincio and Adige.

Built on the bank of the river Adige, San Giorgio, this part of fortification of Verona had a medieval predecessor: In the 1320s, Lord Canegrande della Scala had built a section of the town wall here which was demolished by the Austrian engineers to construct the ravelin preserved to this day.