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The OAA has comfortable resting zones out in the open air which invite to the interaction between visitors. Built and furnished in a very rustic style, it combines perfectly the warmness of an intimate place with the astronomical science. An outside bar and an inside cafeteria serve as meeting spots, and for taking a break from the tour.

Located at 1250 meters in altitude along with its wide terraces, the AAO offers a privileged view of the Andes. It has two rooms with 30 people capacity, each with 65″ 3D screens, projectors and blu-ray. It also has a spacious main hall which is also fully equipped along with a 3×3 meter projector screen.