The Port Works Board is located in an open space in Pla de Palau Square, next to Bosch i Alsina Pier. It is an isolated building designed by Julio Valdés at the beginning of the 20th century. It has a rectangular plan, with a ground floor and two floors above.

The different façades, and especially the main one, are characterised by a very important accumulation of decorative features following an eclectic style. On the ground floor we find a series of semi-circular arched openings flanked by pilasters with a very simple capital. Above, new smooth pilasters continue the same vertical axis and surmount a decorated balustrade located in the central section of the building. On this level, new multiple openings also half-point with awnings in half-vault. In the last floor, which is like an attic but with a significant height, the openings are smaller and quadrangular. Balustrades and balconies are combined. Throughout the façade, the forging used is very variegated. One of the most defining features of this building is the presence of four large towers with a quadrangular plan located at each of the vertices of the building. Two other smaller towers are located between these and the cornice of the front and back façades. This front cornice is quite prominent and is surmounted by three main sculptures with marine icons flanked by winged lions. It has a wide profusion of applied ornamentation, highlighting the rich cresting of the roof area.

The building was seriously affected by bombing during the Civil War, for this reason it had to be restored from the year 1940. More recently it suffered the construction of a rise that has disfigured the effect of the tower system angles, cresting and pumped roof. It is currently in a good state of conservation.

Both its location in a much wider space than the railway landing and its function as a gateway for travelers arriving by sea to the city allowed the construction of a building, which once again appeals to the typology of the palace, and which takes French architecture as a model. In the same way as the headquarters of Gas Lebón, we find the typical four angular towers with a very inclined roof and a profusion of applied ornamentation, highlighting the rich cresting of the roof area, in addition to a bold combination of the openings of semicircular arch, on the columns on the main fçcade, following the model of the Grand Opéra in Paris, as well 18th-century windows following the Catalan tradition on the lateral and rear façades. The terminal, which housed the "El Mundial" restaurant on the upper floor and its own offices such as customs and post offices on the ground floor, was severely affected by the bombings of the civil war.