Oberhof opened its doors to international competitions in 1983 with the inauguration of the then Biathlon Stadium on the occasion of the Army Spartakiade. The World Cup stadium, which has regularly hosted biathlon World Cup races since 1984, was extensively remodeled for the 2004 Biathlon World Championships between 2001 and 2003. With the completion of the arena, the appeal of skiing competitions in and around Oberhof has greatly increased. Since then, World Cup competitions in cross-country skiing and Nordic combined have also been held here. The enthusiasm of the fans and the unique atmosphere in the "cauldron" at the Grenzadler made Oberhof a mecca of biathlon sports. This is one of the reasons why Oberhof was awarded the 2023 Biathlon World Championships in September 2018. For this highlight and with a view to future competitions and events, the LOTTO Thüringen ARENA am Rennsteig is being sustainably remodeled and modernized.