South of Zandvoort, the Amsterdamse Waterleidingduinen (Amsterdam Water Supply Dunes) form a nature reserve of 3,400 hectares. This area with a rich flora and fauna is open to anyone who buys a ticket (€ 1.20) at one of the main entrances or the adjacent tea-gardens (not at De Zilk). No bicycles, no dogs. For more information visit http://www.kustgids.nl/awd-en/index.html