Located 20km (12 miles) west of Amsterdam, Haarlem is a center of Dutch tulip growing and the surrounding countryside affords a fine view of the bulb fields from the end of March to mid-May. The town itself has a beautiful 16th- and 17th-century town center and two fine museums. The Teyler Museum was first established in 1784 from its world-famous Oval Room by merchant banker, Pieter Teyler van der Hulst. The museum has a very diverse collection, which includes drawings by Rembrandt, scientific instruments, fossils and coins. The ultramodern new wing offers a striking contrast with the oak-panelled rooms of the original building. The Frans Hals Museum houses paintings by the artist. Also worth visiting is St Bavo Church, containing a 5000-pipe organ, which Mozart is reported to have played.