Carnaval Festival is a track ride in Travel Realm at Efteling. It's worth seeing on a time-permitting basis.
Think "It's a Small World", but on land, and you've got the general idea of this ride. Your two-seater passenger cars pass scenes of animatronic dolls from around the world, as they join in a worldwide festival to celebrate peace on Earth. It's all standard fare, but comes equipped with a theme tune that is equally annoying as Small World's.