Wikipedia
Vischpoort
The Vischpoort or Vispoort is a late-14th-century city gate and former lighthouse in Harderwijk, Netherlands. The gate, which is located on the historical seaside of the Zuiderzee, is the only one of five gates in the city walls that remains. Between 1851 and 1947 the Vischpoort served as a lighthouse. The Vischpoort is listed as a national heritage site (Dutch: rijksmonument).