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. 

Almost 400 years later, as soon there is ice, people are still ice skating on the Hofvijver. It’s the most beautiful spot in Den Haag to practice this typical Dutch sport (some say it is not even a sport, but an important part of Dutch culture). Next to the Hofvijver are the Dutch parliament buildings, and the Mauritshuis (with some nice paintings)

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

Good Italian food. Only open until 7 pm, so diner only for take away.

Best bakery in town!