Three gates of which the remains have been preserved -- Benschopperpoort, IJsselpoort, Poort Doelenstraat in Ijsselstein. They were built consecutively.
see: https://nl.wikipedia.org/wiki/Lijst_van_rijksmonumenten_in_IJsselstein and https://forten.nl/forten/vesting-ijsselstein/800px-ijsselpoort-ijsselstein/