Athens is known for its cultural events. The city that gave birth to theater offers today a large variety of performances, ranging from text-based drama to physical theater, site specific performances and productions of international caliber. Cultured evenings featuring performing arts, cinema, ancient Greek tragedies and comedies can be enjoyed in open air venues, under the stars of the Athenian sky during the warm months. A unique experience is a performance or a concert held at the Odeon of Herodes Atticus at the foot of the illuminated Acropolis. The Athens Concert Hall welcomes top artists, composers and ensembles from all over the world. Visual arts play a large role in contemporary Athenian cultural life with a number of festivals on video and media arts, the Athens Biennale, large contemporary exhibition spaces and museums and numerous small private galleries scattered in many arty districts within the city center.