The things worth doing in The Hague, from the obvious landmarks to the ones locals actually rate.
Kunstmuseum Den Haag
Berlage's last building, and the largest holding of Mondrian anywhere. Works travel, so check the collection pages if you have come for one painting in particular.
Madurodam
The Netherlands in miniature on a site near Scheveningen: every landmark you have seen this trip, plus the ones you have not. Buying online is cheaper than at the gate.
Peace Palace
The seat of the International Court of Justice, paid for by Carnegie and finished in 1913. The interior opens only on limited guided days booked well ahead; otherwise you get the gates and the gardens.
Beelden aan Zee
A sculpture museum dug into the dunes behind Scheveningen, with a boulevard of oversized comic-book figures outside it.
Kijkduin
The quieter beach at the other end of the city, with dunes instead of a boulevard and none of Scheveningen's summer crush.