![The-Ravelijn-Bridge-by-RO&AD-Architecten-00]()
The Ravelijn "Op den Zoom" is a fortress-island of the city of Bergen op Zoom in The Netherlands which is made in the beginning of the 18th century by Menno van Coehoorn, a famous fortress builder. This is the only "ravelijn" of him still present. The fortress was originally only accessible by boat , so supplies and soldiers had to be rowed the 80 meters to the fortress.