At Berlin’s Alexanderplatz, the city converges — S-Bahn, U-Bahn, regional trains, and trams weaving together the lives of commuters, tourists, and true Berliners. On the platform, a tram wrapped in bold, tropical colors stands in sharp contrast to the glass and steel around it. Most passersby don’t notice the subtle Tinder ad in its design, but for those who do, it adds a quiet wink to the everyday dance of arrivals and departures.