Barcelona's official motto is "Barcelona es teva", which means "Barcelona is yours" in Catalan. The title above is supposed to mean "Barcelona is mine", but is likely an incorrect translation.
El Gran Casino de Barcelona.
The poker room. They had one 5-10 PLO game and three 2-5 NLHE games running. The NLHE table I sat at was quite profitable, despite the enormous rake (something like 5% uncapped). Unfortunately I have to get up early, so I only played for an hour and a half or so.
La Placa de Catalunya, a stone's throw from the hotel.