The building seems to be an ode to 'Fondation Beyeler' and the garden is by the great Piet Oudolf. You can walk around the estate even if you don't want to enter the museum. 

If you are not afraid to dig your way through and like to hunt for hidden treasures... 

In 1618 Jan van de Velde II made “Gezicht op de Hofvijver in Den Haag”, with people ice skating and having fun on ice.

One of the most beautiful museums i know (in terms of architecture) is in Den Haag. The architect is H.P Berlage. The superb collection Mondrian paintings couldn’t be more at home as here.

Great records !