Borussia Dortmund is a sports club in Germany.
Borussia Dortmund . Dortmund holds a long-standing rivalry with Ruhr neighbours Schalke 04 , known as the Revierderby . Bundesliga . Bundesliga [ ˈeːɐ̯stə ˈbʊndəsˌliːɡa ] ) , is a professional association football league in Germany and the football league with the highest average stadium attendance worldwide . Dortmund ( [ ˈdɔɐ̯tmʊnt ] ; Düörpm [ [ ˈdyːœɐ̯pm̩ ] ] ; Tremonia ) is an independent city in North Rhine-Westphalia , Germany .