See all Things to do in Dortmund Dortmund for: Adventure, Food And Dining, Art And Culture, Nightlife, Spa, History, First Timers, Family, Romance, Shopping Christmas Market About The Christmas Market in Dortmund is one of the largest in Germany and host of the largest christmas 'tree' in the world (in fact a collection of many smaller trees). It is open from late November. Add to Wish List