This building is part of the Erandio Police Headquarters complex and houses the public administrative functions.
The building is conceived as a large opaque block, a monolith in the landscape with no reference to human scale, a configuration inspired by the neighbouring Martiartu medieval tower.
The main protagonist for the building is a large central void core. The core acts as the main distribution space and foyer for a conference hall. Natural light penetrates through various parts of the building to help light the core.
In plan the building is arranged in concentric rings, with open plan and enclosed office spaces located in a 9m wide ring around the perimeter walls. A second ring of meeting rooms and services is located next to the central core. A conference hall and library are also located below and above the central core, respectively.
The façade consists of an external timber louvered screen in front of glazing. This helps the building to relate with the surrounding landscape. The façade is punctuated by four double height terraces which signify the location of the directors areas.