I did not find discussions about mosaics on TripAdvisor.
It seems that mosaics are to see in De Zilk on 12 and 13 april 2014 and in Lisse one week later.
Found some pics from last year's competition in Lisse.
In earlier years we found this mosaics by hasard and may be other people would like to go and have a look.
Cor and Nina: Do you have more news about?