Kasteel de Wittenburg is a castle estate in Wassenaar that hosts meetings, conferences, receptions, private celebrations and weddings. It has eleven rooms for gatherings of 2 to 500 people, ten hotel rooms in the castle and a restaurant, Sophie, on the same estate.
Seminars and company events
The castle offers eleven rooms for meetings, presentations and congresses. The largest is the Oranje Nassau zaal, with a stated capacity of 300 in theater setup, 250 at round tables, 80 at a long table and 500 for a reception. The Grote lounge takes 80 in theater setup, and the Serre, a glass conservatory 13 meters long, takes 60. The Kleine lounge and the Bibliotheek each take 40 in theater setup. For smaller groups there are the Franse Salon, with 20 in theater setup, the Speelman salon of 29 square meters for up to 10 people, and boardrooms of 27 square meters and up.
Wi-Fi is free throughout the castle, and audiovisual equipment is available on request. The estate has more than 200 free parking spaces. The castle describes itself as a full partner for an event, from parking assistance to the whole catering plan.
Weddings and receptions
A wedding ceremony can be held in any of the castle's rooms or in the wooded garden beside the pond. The castle has two wedding chairs for the ceremony. The Serre opens onto the garden and the pond, and the garden itself is used for receptions in pleasant weather. Couples have a bridal suite with a sauna and a jacuzzi, and guests can stay in the castle's hotel rooms. Menus range from small bites and an informal walking dinner to a formal dinner.
Rooms and capacities
The castle states that its rooms hold gatherings from 2 to 500 people. Lunches and dinners are served for 2 to 250 guests, and receptions can host more than 500. The room-by-room figures above come from the castle's business page. Capacities for other layouts, such as U-shape and block, are listed per room on that page and run from 14 to 50 people in the rooms that offer them.
Accommodation
The castle has 10 hotel rooms, two of which are suites with a separate sitting room and a bathroom. Rooms have free Wi-Fi, air conditioning and a flat-screen television. This allows a small group to stay on the estate after a seminar or a dinner.
Catering
The kitchen is located in the castle's catacombs, and the kitchen team works daily with fresh products. The castle provides the full culinary plan for an event. Restaurant Sophie, on the estate, serves à la carte dishes inspired by the travels of the Speelman family. Payment at the restaurant and the castle is by debit card only.
History and setting
Jonkheer Helenus Marinus Speelman bought the land in the spring of 1899 and began building a country house. The architect was J.J. van Nieukerken, who also designed the Academisch Ziekenhuis in Groningen. Construction was completed in 1901, and Speelman died in 1910. The castle opened to guests as a hotel in late 1963. Today it is used for business meetings, events and concerts, and it sits on a wooded estate in Wassenaar.
Getting there
The address is Landgoed de Wittenburg 1, 2244 BV Wassenaar. The castle's website gives no public transport directions, so ask the sales team for the best route when you send your request.





