The Fort of Bornem is part of the third belt of forts around Antwerp. This concrete armored fort is the only one built whose alignment is an irregular quadrangle. Why this is so is unclear to this day. Construction of the fort began in 1906 but it was not finished when World War I broke out. During the Interwar period, the fort was an infantry support point. During World War II, it also had a logistical function. Now the fort is a fishing haven but also a bat sanctuary. People are also working to make some of its history accessible again.
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