I hear the city's Gothic Quarter is one of the oldest areas in Europe.
That's such a beautiful area - very walkable from where I was staying. It's just a gorgeous, very old area with beautiful shops. A lot of great little design shops, shoe shops, clothing shops, a lot of ice cream stands, cute little pizzerias. It's very alive at night. Very narrow cobblestone streets; everything is stone; all the doorways are tiny. You will have this very, very old structure, but a lot of the shops and restaurants and all that stuff are very, very new and chic and well designed. That kind of juxtaposition. It's just a good area to get lost in.

Okay, dinner. I know you loved to get lost, but give us some addresses.
For breakfast, lunch, and dinner there is Bar Leo on San Carles in Barceloneta. They offer home-cooked Andalusian food - ­patas de pork, paella, migas, and tapas - in a totally authentic atmosphere. You also get to meet Leo. The location is great. It kind of opens out into a square, but it's right by the beach with the boardwalk. L'Aguilera in Borne-Ribera is great. It's right next to the Plaça St. Augusti Vell. Cal Pinxo on Carrer Baluard is a great place to have paella of all sorts, and it's right on the beach.

Did you make it to the famous restaurant El Bulli, known for its chef, Ferran Adrià, and his eclectic Iberian cuisine? He does dishes with foam and …
No, I didn't go anywhere that would have been known, 'cause I'm hanging around locals. Again, that's why I really loved Barceloneta. It has a very lived-in atmosphere. I just personally like that vibe.

Where would you send us on a day trip from Barcelona?
You take a train from Barcelona to Gualta, this little village about an hour north of the city, which has the most unbelievable jazz bar, Mas Sorrer. It's completely outdoors. You have to walk through this field of sunflowers to get to it. The bar itself is kind of like this amazing asymmetrical tented bar, and they show really old films. They project movies on the giant stone wall of the building. Outside, there's a pool table, and there's a little performance platform; they might have a fire eater or trapeze people, and there's this guy who does this crazy puppet show in a trailer. It's really amazing, the most phenomenal bar I have ever been to. In July, the owner, Gerard Argemi, and my friend Andrew hosted the First International Short Film Festival Mas Sorrer there. It was three nights of great short films by some of the best new filmmakers from around the world, playing on a stone wall surrounded by fields of sunflowers. There was also the Sonar Festival - a huge electronic-music festival. We actually went there at midnight, and we were dancing until seven in the morning. The light was coming up and we were completely fried. We walked all the way to the beach, took off all our clothes, and went for a dip. What else are you going to do after dancing for seven hours straight?

I did Satellites, this play in New York. I met the director, Michael Greif, in Barcelona, and we hung out. We met at Parc Güell. We went to have dinner with a bunch of people. Later, at the festival, a lot of kids were throwing firecrackers, so there were firecrackers going off everywhere. Everyone goes out on the beach and you grab a beer and sit on the beach and just talk to people. You are out until the late hours of the morning. That was the first day that I was just, like, I'm going to roll with it. I don't really need to sleep. I'm relaxing. I don't really need to worry about the sand in my underwear; I'm just going to sit here anyway. I'm not going to worry that someone is going to yell at me for having a beer on the beach, because everyone else is doing it. I'm just going to sit and talk. I think it's kind of hard to make a decision in Spain.