In Berlin’s U-Bahn an announcement cautions passengers: “Bitte beachten Sie beim Aussteigen die Lücke zwischen Zug und Bahnsteigkante.” This fastidious rendition of the London Underground’s “mind the gap” warning reveals audio equivalencies between the two transport networks. However, the more numerous curved platforms of the Underground—originally designed for the shorter trains of the past—mean that its gaps are more pronounced than those of the U-Bahn. When it comes to the cultural investigation of each city’s broader public transport histories and geographies, the reverse is true. Unlike in London, public transport in the German capital has escaped the significant scholarly attention of historians in recent years.