A cruise ship is a passenger ship used for pleasure voyages, where the voyage itself and the ship's amenities are a part of the experience, as well as the different destinations, i.e., ports of call, along the way. Transportation is not the only purpose of cruising, particularly on cruises that return passengers to their originating port, with the ports of call usually in a specified region of a continent. There are even cruises to nowhere" or "nowhere voyages" where the ship makes 2–3 night round trips without any ports of call.