Maximilian Tower, Military fortification in Sant'Erasmo, Venice, Italy

Maximilian Tower is a circular fortification on Sant'Erasmo island, surrounded by a water ditch, with a rotating cannon platform on top. The structure displays typical 1800s Austrian military architecture with thick stone walls and firing ports.

Austrian forces built this fortification between 1843 and 1844 on the site of an earlier French fort from the Napoleonic wars. It was part of a broader defense system protecting Venice and its lagoon during Austrian rule.

The name comes from Archduke Maximilian of Habsburg-Este, artillery general of the Austro-Hungarian army, who had forts built around Linz in the 1830s; the model was then named after him. General Radetzky, governor of the Kingdom of Lombardy-Venetia, ordered such towers for Verona, Venice, Trieste and Rovigo, and the tower on Sant'Erasmo belongs to that programme.

The tower sits on a lightly visited island and is best reached by vaporetto or boat, requiring some planning. The site is partly accessible, but maintenance work may affect areas, so check current conditions before you go.

The tower's dozen firing ports were arranged around the full perimeter, giving defenders 360-degree coverage without any rotating platform. A test ordered by Archduke Maximilian himself showed that heavy artillery could easily destroy one of these towers, and from the second half of the 19th century the model was no longer used.