Wunderland bills itself as the world’s largest model railway, but it’s a lot more than Lilliputian trains chugging through snowy Alpine peaks—even though there are plenty of such charming scenarios, with 900 trains and a total of 12,000 cars traveling through landscapes from Scandinavian forests to American deserts. Planes descend from the sky and make a smooth landing at Hamburg airport, trucks roar down highways, and fire trucks and police cars race through city streets. Even the miniaturized human activity is fascinating to witness: Body builders lift weights, prostitutes stand alluringly in windows, and pop-concertgoers light up cigarettes, making Wunderland one of the few public places in Hamburg where smoking is tolerated.