Unna is a city of around 59,000 people in North Rhine-Westphalia, Germany, the seat of the Unna district. The newly refurbished Unna s…Unna is a city of around 59,000 people in North Rhine-Westphalia, Germany, the seat of the Unna district. The newly refurbished Unna station has trains to all major cities in North Rhine Westphalia including Dortmund, Cologne, Münster, Hamm, Düsseldorf and Wuppertal. There is also the Regional-Express 7, which runs from Rheine via Cologne to Krefeld.