La Cartuja Track and Field Stadium, which has a capacity for 60,000 spectators and was used for the 1999 World Athletics Championships, is situated by the river on a very horizontal landscape, which called for a building with minimum visual impact.
Sinking the level of the sports track in relation to the natural level of the land, the access to the stadium is situated at an intermediate level, resulting in a minor difference between levels for spectators and reducing problems of evacuation. Thus, a building both silhouette-style and horizontal was designed, which incorporating several other purposes such as a hotel and offices, adopts an external perimeter marked by a series of angles and protrusions. This strongly contrasts to the obligatory continuous and oval lines of the seating area and roof.
On the one hand, the building has been generated by the contrast -the marked difference between the exterior and the interior- and on the other by the efforts to unify several functions of varying sizes and natures in one single building.