Four GVB ferry lines leave from Centraal Station, but only one is of any interest to tourists. The Buiksloterwegveer leaves from Pier 7 behind Centraal Station every 8 to 15 minutes, day and night. The ferry transports pedestrians, cyclists, and motorcyclists across the IJ channel to North Amsterdam. There is no fee for the service. North Amsterdam may prove to be less interesting than the refreshing trip, which takes about five minutes.