The Aragón Pavilion has been designed by Olano y Mendo Arquitectos, from Zaragoza. It covers an area of 2,500 m2 and is 25 metres high. The pavilion is spread over a basement floor, ground floor or enclosure, first floor, second floor and terrace.
The pavilion takes the form of a typical Aragonese wicker basket achieved by intertwined panels of glass and micro-concrete with white glass fibre, providing the interior with a large quantity of natural light. This weave is opaque in the base, becoming more transparent as the building gets higher. The interior of this large basket is crossed by nine large irregular columns, three of which act as supports and communication cores, and six as prisms or landscapes. The exterior space gives shade to the queues of people waiting to get in or to visitors looking for a quiet, cool place where to rest in the Zaragoza hot summer. The building is also designed with energy-saving characteristics, making it an "environmentally responsible" structure.