Antwerp is one of the most beautiful cities in Belgium; at the same time, its beauty is not revealed gradually but strikes at first sight. Usually, the program of a sightseeing excursion in English with a guide includes an excursion to the Sten Castle, the Town Hall, the Opera, the Cathedral of Our Lady of Antwerp and the House of Rubens, but 1001guide recommends including the newest Museum aan de Stroom: on its roof, there is an excellent (and free) observation deck.