When the weather gets cold or the rain comes down, Germany offers a wealth of things to do indoors. For culture vultures try out one of Germanys vast number of Museums, Castles or Art Galleries. For the winter sports enthusiast, head inside and try out two indoor skiing facilities, Bottrop and Neuss in North Rhine-Westphalia open every day from morning to midnight.  Whatever takes your fancy, you will be spoilt for choice.