St Michael's Abbey - Credit: Wikimedia Commons
St Michael's Abbey - Credit: Wikimedia Commons
St Michael's Abbey in Antwerp was a Premonstratensian abbey founded in 1124 by Norbert of Xanten and laid waste during the French Revolutionary Wars. In 1807 a semaphore station was installed in the tower of the church.Rob Korving, Bart van der Herten, Een tijding met de snelheid des bliksems: de optische telegraaf in de Nederlanden (1800-1850) (Leuven University Press, 1997), p. 63. The buildings were demolished in 1831. Read more on Wikipedia
Source: en.wikipedia.org