Dortmund's first appearance in writing, around 882, is a tax receipt. A monk at Werden Abbey noted that in a place called Throtmanni, the free man Arnold paid eight pfennigs. The name shifted through Tremonia and Trotmunni and Dorpmunde before settling into modern German. By 1293 the town held an Imperial brewing right, one of the earliest in Europe, and beer would shadow Dortmund for the next seven hundred years. As a Hanseatic League city, it was the chief town of the Rhine, Westphalia, and the Netherlands Circle. The English king Edward III once borrowed money from Dortmund merchants and pawned his crown as collateral. When 1,200 knights led by the Archbishop of Cologne besieged the city in 1389, Dortmund held out and adopted the motto it still keeps: So fast as Düörpm, as firm as Dortmund.

Industrialisation turned a quiet Westphalian market town into a furnace. Between 1875 and 1905 Dortmund's population leapt from 57,742 to nearly 380,000 as coal pits opened and steelworks rose along the Emscher. Whole neighbourhoods, Nordstadt and the Borsigplatz quarter among them, were thrown up in less than a decade to house mine workers arriving from Silesia, East Prussia, France and Ireland. By the early twentieth century the city was one of Germany's three great beer capitals, home to Dortmunder Union and DAB, brewing more lager than Munich. Smokestacks defined the skyline and the night sky glowed orange over the Hoesch Westfalenhütte. Then came the war the smokestacks had helped feed. Long before the catastrophic raid of March 1945, the Oil Campaign had already gutted Hoesch-Benzin's synthetic fuel plant, the Westfalenhütte, and the Zeche Hansa. Two-thirds of Dortmund's homes were destroyed before the final blow.

The post-war architects faced an honest question: should they recreate a medieval city, or accept that one was gone? Dortmund chose accept. The street grid was preserved, the salt-trade route of the Westenhellweg still cuts through the centre as a pedestrian artery, and a ring road traces the vanished city wall. But the buildings that filled in the old footprint were 1950s reconstructions, modest, simple, frequently concrete. Only about 30 percent of today's Dortmund predates the war. Reinoldikirche and Marienkirche were patiently rebuilt. The 1966 Opera House, raised on the site of the synagogue the Nazis destroyed in 1938, became a quiet landmark of modern architecture. The result is a cityscape unlike Cologne or Munich, less postcard, more honest: a place that decided not to fake what it had lost.

On 30 April 1987 the Minister Stein colliery shut down, ending more than 150 years of Dortmund coal. The breweries followed, the steelworks folded, and the city had to choose what to be next. The answer came in pieces. The Phoenix steelworks site in Hörde was demolished and flooded; on 1 October 2010 the Phoenix See, an artificial lake larger than Hamburg's Alster, was filled with water where blast furnaces had stood. The U-Tower, an old Dortmunder Union brewery, became a creative-arts centre crowned with a giant illuminated U. Biomedical and microsystems firms moved into the converted northern industrial zones, and the Technical University now anchors a research belt along the H-Bahn monorail. Dortmund still calls itself the Herzkammer der SPD, the heart chamber of the Social Democrats, though the September 2025 mayoral runoff finally broke that streak: Alexander Omar Kalouti of the CDU defeated SPD candidate Thomas Westphal with 52.9 percent.

From the air, four landmarks anchor Dortmund. The yellow rectangle south of the centre is the Westfalenstadion, Germany's largest football stadium and the loudest place in European sport. Just east of it the 266-metre Florianturm telecommunications mast pierces the Westfalenpark. The Phoenix See glints in Hörde, a teardrop of water on what was open-hearth steel ground a generation ago. And directly south of the Hauptbahnhof, the white-clad cube of the German Football Museum sits beside the Theater Dortmund and the Konzerthaus, an art-and-culture mile assembled in the gap the bombers left.