Spanish name: "Teatro Griego".

Open-air theatre, built 1929 for the "Exposicíon Internacional de Barcelona" exposition (as a modern adaption of a Greek theatre, losely based on the Theatre at Epidauros). Since 1976, used for the "Festival d'Estiu de Barcelona " summer festival, also known as "Festival Grec".

Links: www.bcn.es/grec, Wikipedia

[N.B.: This theatre is not identical with the central plaza in Barcelona's Parque Güell, also known under the name "Teatre Grec/Teatro Griego" as intended by its creator A. Gaudi.]