As the prow of a ship ready to weigh anchor and set sail, on the hammer of the main dock of the Outer Harbour of Ferrol, opened to the views of the estuary. To meet this landscaping challenge is used a formal repertoire of pure volumetrys, integrated into the geometry of the dam itself and, secondly, they rely on the proper forms of naval architecture. From a functional point of view, the building houses the program uses proposed by the Port Authority, allowing from its upper floors the total perimeter view of the port and the estuary. An external ramp system allows saving the difference in height between the sea wall of the dam and access to the roof. Consequently, the priority objectives to be attained by the solution adopted are: a) Uniqueness and representation. The building must become, in the Outer Harbour, a landmark and focus. b) Functionality and flexibility. Both in the conception of space and structure design and facilities, the aim was versatility and adaptability for future changes as needed. c) Intelligent building and "high tech " architecture. Provide the latest technologycal innovations, both in materials and facilities, setting an "intelligent building"and placing it within what is known as "high tech" architecture. d) Economy, Maintenance, Exploitation. Achieve a long-term economic investment based on the construction quality and ease design, reducing maintenance and operation costs. To achieve those objectives, we have adopted the following criteria basic design: 1. The building as a container. 2. Diaphanous spaces and transparency. 3. Energy efficiency.