Pay a visit to the interesting Fort Island Pampus. In September, every weekend will focus specifically on the theme water. This includes, for example, a water organ workshop. Pampus is located in the IJ, is on the Unesco World Heritage List, part of the Amsterdam Defence Line and of the Nieuwe Hollandse Waterlinie.
You can wander through the halls of the fort and enjoy the beautiful view from the terrace. The island Pampus can be reached by ferry 'De Vriendschap' from Muiden, departing from the Muiderslot ferry jetty.