In Barcelona, you will take on the role of builders in 19th-century Barcelona who are working on the new expansion to the city. Your main goal is to construct buildings to accommodate the citizens who want to leave the old city, and in the process, you will also build streets, create tram lines, and build public services. You may even decide to explore "Modernisme", a new architectural and arts style that has been gaining popularity among the rich.

Barcelona is played over a variable number of rounds interrupted by three scoring phases before a final scoring phase. Every round, each player takes a single turn consisting of two or more actions, a building phase, and then preparation for their next turn. At the end of the game, the player with the most points wins.