Koninklijk Landgoed De Horsten is a large uninterrupted royal estate at the periphery of Wassenaar. It connects the Ter Horst, Raaphorst and Eikenhorst estates. Eikenhorst, where King Willem-Alexander and Queen Maxima live, is not accessible to the public, but you can go for lovely walks in the other parts of the park. There are several signposted walking routes. Admission tickets can be bought at the ticket machine.