Topped by a towering 50m-high steeple, the Gothic Grote Kerk van St Bavo cathedral contains some fine Renaissance artworks, but the star attraction is its stunning Müller organ – one of the most magnificent in the world, standing 30m high with about 5000 pipes. It was played by Handel and a 10-year-old Mozart. Free hour-long organ recitals take place at 8.15pm Tuesday and 4pm Thursday in July and August, and 2pm on the last Saturday of the month year-round.