Actually it is in Bucharest, around 20 km from the city in the north, it is really close to Otopen Airport (from the waterpark you can see planes 100 or less meters above). It's called Water Park (
http://www.waterpark.ro/index_20_octombrie_2007.swf) and the pics are from there, because in many of them you see umbrellas with "Silva" which is a romanian beer
