Located in the Ciutat Vella district, the Boilermakers' Guild House faces the Plaça de Sant Felip Neri with its only façade. It is a building between partitions consisting of a ground floor, a main floor and an upper floor. Its floor plan is irregular, as it was built anew by filling the gaps in a plot occupied by a building and part of others destroyed by the ravages of the Civil War. The façade is a good example of hybrid solutions, combining classical and baroque elements in the openings but preserving a façade composition typical of the Catalan romanticism (La Renaixença). It has a symmetrical composition with a single vertical axis of openings. On the ground floor there is a monumental stone portal in neoclassical style with Corinthian columns and an entablature rich in decorations. It has a medallion in the centre with two figures holding a shield with symbolism supposedly of the guild. The entablature is crowned with decorative elements and includes two corbels that initiate the classical composition that houses the first-floor window. This composition repeats the scheme below in a smaller staircase, but with the addition of a large stone archivolt that is reminiscent of the Gothic style. On this level there is also a large medallion between the entablature and the archivolt. Finally, the first floor has a rectangular opening framed by Corinthian pilasters and a Classicist entablature. Its roof is flat with a stone sill formed by the façade itself and crowned by a classical cornice with grooved mouldings and a tooth of pearls at the bottom. To drain the roof, just below the cornice, there are three stone gargoyles formalised in three figures of winged mammals or fantastic birds of mythological inspiration. The entire façade is made of ashlar stone masonry, which becomes a magnificent canvas from which this axis of openings stands out, the forceful protagonist of the façade, complemented only by a small window on the ground floor with very austere lines. The architectural typology to which the building belongs could be identified as Renaissance given the simplicity and rigour of the façade's composition. However, there is a profusion of complex classical details in the main openings of the façade. The building as such dates from the middle of the last century, as the site was vacant after the destruction of the existing building by Franco's bombs during the Spanish Civil War. The moved façade had its original location in Carrer de la Bòria, facing the Plaça dels Àngels with an arcade that passed over a small alley, Carrer Fileteres. On this site it had withstood the bombardment of 1714, but this sector was affected by the opening of the Via Laietana in 1911. However, the façade was saved and initially moved to Plaça Lesseps, a place where it was really out of context. In 1959, it was moved again, this time to Plaça de Sant Felip Neri, which had suffered the ravages of war mentioned above. The arcade that was not used in this new building was also used in the neighbouring building to give way to an alley, Montjuïc del Bisbe, to allow one of the two entrances to the square. Probably due to the Mora family, this building, usually known as the Boilermakers' Guild House, was erected in Carrer de la Bòria, over the Filateres gateway, next to Plaça de l'Àngel. When the street was restructured due to the opening of the Via Laietana, the façade of the building was moved in 1911 to Plaça Lesseps, where it was rebuilt. It was moved again in the 1950s to its current location in Plaça de Sant Felip Neri.