The Wunderland Kalkar is unique in the world! It is a large, never-been-used nuclear power plant on the river Rhine (near the Dutch-German border) which has been converted to a family holiday resort with plenty to offer; 3-star hotels, restaurants, bars, pubs, indoor & outdoor entertainment/activities and a large amusement park. And the best is: You get excellent value-for-money all-inclusive deals. Pay once, enjoy EVERYTHING for free!