Forte Sangallo, Renaissance military fort in Nettuno, Italy.
Forte Sangallo is a Renaissance fort with thick stone walls, defense towers, and a five-sided shape built specifically to withstand attacks from the sea. Every angle of the structure serves a defensive purpose.
The fort was founded in 1501 by Antonio da Sangallo the Elder to protect Rome from sea attacks. Over centuries it served various rulers and changed with shifting military needs.
The fort's layout and design reflect how people in the 1500s understood coastal defense and approached military building. Visitors walking through it can see the practical choices they made when facing threats from the sea.
Access is usually by guided tour, which explains the defensive systems and how the fort works. Wear sturdy shoes since you will climb stairs and walk on uneven stone surfaces.
Inside the fort are specially built chambers that once stored weapons and supplies. These hidden spaces show how people managed resources when trapped on a coastal outpost.
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