Oh thanks, Mark ! Then of course 'on' is correct, if it is an island. I didn't get as far as looking at a map. :))

Ameland is one of the Wadden-islands north of the Waddenzee in the Netherlands. Look at a map of the Netherlands: the islands are from west to east: Texel, Vlieland, Terschelling, Ameland, Schiermonnikoog and Rottum. The islands have small towns/villages. Because of their location and beaches they are popular with tourists. Further east there are other islands that are part of Germany.

in Ameland ? I understand this is a municipality, then it would be 'in Ameland'. Unless you were saying 'on Ameland streets.