Press play on the interactive above to watch as North American municipalities accumulate MLB, NBA, NHL, and NFL titles. You can select one of the tabs at the top to focus on one of the four sports, or you can drag the slider at the bottom of the map to zoom straight to a specific year. The trophy icons on the map indicate which cities held the four major titles during the year in question. Finally, to see a comprehensive list of what teams are responsible for each city’s titles, click on the place in question.