[Efteling] Piraña is a river rapids ride in amusement park Efteling in the Netherlands. It was designed by Ton van de Ven, built by Intamin, and opened in 1983. ==History and details== The ride is one of many attractions since the 80’s to diversify in more than just a fairy-tale park. House designer van de Ven took Intamin’s design, as... Found on http://en.wikipedia.org/wiki/Piraña_(Efteling)