Cassero Senese, Medieval fortification in Grosseto, Italy
Cassero Senese is a rectangular stone tower in Grosseto featuring travertine exterior cladding, a covered terrace, and a distinctive double arch entrance. The structure spans three levels with exhibition spaces and functions as a venue for municipal ceremonies.
The Republic of Siena completed this military structure in 1345 to establish control over the Maremma region. The tower served as both a practical fortification and a symbolic marker of Sienese authority over the contested territory.
The black and white coat of arms of Siena displayed on the outer wall marks the republic's medieval claim over this territory. This symbol remains clearly visible today and speaks to the power struggles between different city-states in the region.
The tower is centrally located in Grosseto and easily accessible on foot, allowing visitors to explore it comfortably. The three interior levels are well-spaced and can be visited at a relaxed pace without requiring extensive time.
Along with Porta Vecchia, this is one of the few medieval buildings that survived the 16th-century reconstruction of the city walls. The survival of these structures makes them remarkable remnants from an earlier period of the city.
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