(In response on a poster who thought The Queen should open her palaces for the public).
There are so many buildings owned by the Dutch State which are
not accessible for the public.
The public has no entrance to the grand salons in the Cabinet of the Premier:
The public has no entrance to the Catshuis, the residence of the Premier and his family:
The public has no entrance to the awesome salons the the official residence of the Mayor of Amsterdam:
Etc. etc.
The public has acces to Palace Het Loo.
The public has access to the Royal Palace Amsterdam.
The public will get access to Soestdijk Palace.
The public has access to the Royal Stables in Apeldoorn.
The Public has access to the Royal Stables in The Hague.
The public has acces to the Royal Archives in The Hague.
For the two palaces in The Hague which serve as private residence (Huis ten Bosch) and as offices for the royal household (Noordeinde) you can make extensive virtual tours with lots of explanation, zooming-in functions et al on the website of the Royal House.
Drakensteyn, Eikenhorst and Huis 't Loo are privately owned.
Castle Het Loo is no public building but is rented to the Queen to serve as her private retreat.
The pics are from ANP and are bucketed via my webspace.