"The Hague is an international and famous city, which is not in Utrecht."
Translation:Den Haag is een internationale en beroemde stad, die niet in Utrecht ligt.
That's an Old Dutch form of de, you will probably never see it except for in names/places like Den Haag. The only Old Dutch forms of de you'll probably ever see are: 's and der. Der means 'of the' and is kinda archaic but used when van de becomes really repetitive or in the name of the Netherlands (Koninkrijk der Nederlanden) 's means 'in the'; i.e. 's Nachts.
Sorry I kinda went off topic there, I just really like the word der and 's :P