Mulled wine, fried sausages, and plenty of Christmas spirit. At first sight, the Christmas Avenue market in West Berlin looks much like any other of the roughly 100 Christmas markets in the German capital.

BERLIN (AP) — The smells of mulled wine, roasted almonds and hot bratwurst are wafting through the air across the German capital again, as the city’s more than 100 Christmas markets are opening their doors this week. But the annual tradition that ...