Edifici aïllat, envoltat de jardí i situat al centre de la ciutat, en la zona de l'eixample vuitcentista. Té un caràcter monumental, de proporcions considerables i estil classicitzant. El sistema estructural de l'edifici és a base de murs de càrrega i forjat. El sostre és de revoltó ceràmic i biguetes d'acer laminat. Els murs de càrrega són obrats amb blocs de pedra de 50 cm. de gruix. La façana principal presenta un cos central un xic més elevat que la resta i una torre a cada extrem de façana. La decoració és d'estil neoclàssic. Al cos principal hi ha un portalada de mig punt, flanquejada per unes columnes adossades amb capitell jònic; remata el cos un frontó triangular. El campanar és d'espadanya. La resta de façana és també de línia molt clàssica i regular. El seu fundador fou el manresà Francesc Cots i Argullol, que no pogué veure acabada l'obra, ja que va morir poc desprès de començar-se el projecte d'aquesta. El projecte s'encarregà a l'arquitecte barceloní Antoni Rovira i Trias. Es va posar la primera pedra el 3 de maig de 1857 i la part principal de l'edifici s'acabà a l'agost del 1859. El 14 de març de 1879 es van començar les obres de l'església, que fou beneïda el 12 d'octubre de 1881. S'han fet diverses reformes a la construcció, essent la més important la de l'arquitecte Alexandre Soler i March, que reformà la façana principal i construí uns cossos laterals. Actualment es troba en fase de restauració.

Conjunt de tres dipòsits colgats, de 25 x 40 m cadascun, l'estructura dels quals està formada per dues crugies dividides per 4 pilars i 5 arcs formers de pedra, entrecreuades a la vegada per altres 4 arcs torals, generant unes voltes de pedra rebaixades.

When, in 1862, the new Eixample district began to be developed, the city council had not yet resolved to supply drinking water to all its dwellings. On the 14th of October of that same year, the honorary intendant of the province of Barcelona, Jaume Safont i Lluch, granted this land to the Societat de Crèdit i Foment de l'Eixample de Barcelona, which in turn hired the architect Josep Oriol Mestres i Esplugas to design a water tower to supply the area. The municipal architect did not initially approve Mestres' project (a hexagonal tower which was 24 m high with a capacity for 730 m³ of water) because it exceeded the maximum height of 20 m permitted in the Eixample. In May 1867, Mayor Luis Rodríguez Téllez signed the building permits, considering that it was not possible to guarantee a good water flow in the tall buildings if the tower was the same height as the tall buildings. This construction formed part of a group of buildings intended for the elevation and distribution of water by means of a 20 hp steam engine (which was later electrified) to raise the water from the lower well to the upper reservoir. With a hexagonal ground plan, the structure of this tower's elevation comprises six levels, the last of which was used as a water tank, and a roof terrace. These levels are visible from the outside through the brick mouldings that mark the presence of the floor slabs. The entire construction is made of exposed brick and the openings are in the form of semi-circular arches without frames. On the first four levels, the flat enclosing walls are evenly connected to the corner pillars. However, on the fourth level, instead of windows, there are balconies resting on lowered arches with brick balustrades forming rhomboids. From this level onwards, the reinforcement walls have a circular plan that is adapted to the building by means of segmental arches and brick corbels. The fifth level has the openings in the form of twinned arches within blind arches. As this was originally the last level reserved for the upper cistern, it has the old crowning of the building, with a cornice decorated with corbels. The sixth level rises above this cornice, which is the result of a later raising, and has a new stucco cornice decorated with corbels and oculi. Ventilation on this level is provided by narrow vents cut directly into the wall. Inside, six radially arranged walls compartmentalise the space and distribute the enormous weight of the upper cistern. Each of these compartments is covered with supporting lowered vaults, except for the compartment containing the staircase leading to the top of the tower.

In the early 1960s, a company was set up to bring water from the Vallès (around the Caldes stream and the river Ripoll) to Barcelona. The promoter was Andreu Marí, but the work was financed by the banker brothers Manuel, Ignasi, Jaume and Casimir Girona. Another important partner was Josep Rosich i Jené, who in 1864 gave a boost to the work, which had not yet got off the ground. In 1869 the project was declared to be of public interest. The works went on until 1875. The pipeline, which was 20,218 metres long, started at the Can Tintoré estate in Barberà del Vallès and was to end at a reservoir in Guinardó, which was never built. To deliver the water, underground tunnels were built in many sections and overhead aqueducts in others and, as there was no reservoir at the end of the route, the water was injected directly into the distribution network; the surplus water could not accumulate and was drained into the Guineu torrent. Construction was delayed several times and, in 1876, the Girona brothers negotiated the merger of the two companies with the Compañía de Aguas de Barcelona (CAB, Water Company of Barcelona). CAB was the owner of the Dosrius aqueduct, which in Trinitat Nova coincided with the Vallès aqueduct and from this point onwards they ran parallel. Negotiations dragged on due to a series of controversies and disagreements and, finally, in 1881, CAB bought the assets of Aigües del Baix Vallès. The water coming from the Baix Vallès pipeline was introduced into the Dosrius pipeline at the point where it coincided in Trinitat Nova and was collected in the Horta-Guinardó Water Park, and the channelling section between Trinitat Nova and Guinardó of the Vallès pipeline fell into disuse. In 1882, the Compañía de Aguas de Barcelona was taken over by the Sociedad General de Aguas de Barcelona (General Water Company of Barcelona), the parent company of AGBAR. These conduits were in operation until the 1980s, but with decreasing use. This section of the Vallès aqueduct is located in the Parc Central de Nou Barris. Three large semicircular arches support the passage through which the water used to flow. This channelling is now open and passable. On both sides of the arches, pilasters run along the wall until they reach the water control towers. These are quadrangular in plan, open on the sides that open onto the aqueduct and with small round-arched windows in the side walls and a cornice at the top. On one side, next to the pilaster, there is a small semicircular arched opening. The facing is made of irregular masonry with some brick elements such as the soffit of the arches, the corners, the cornices...

The building was created to meet the water demand of a park like the one in Ciutadella, and it is located next to it, on a standard block in the Eixample. The volume of the building is almost cubic, with four bays, with all the same façades – of solid brick, the only material used – and completely devoid of ornamentation; it is a pure service building, transcended based on the rigorous order of its façade, defined by the external buttresses supporting the deposit. It is aligned against Wellington Street, without touching any chamfer. The tank is located in the open air, elevated to pressurise the water by gravity. The interior space is a hypostyle room, the product of converting the support walls of the vaults that support the tank into pillars by drilling them through a regular system of arches. It is one of the most beautiful interior spaces in the city. The structure of the tank was calculated by Antoni Gaudí, still a student, in exchange for a direct pass in the subject Resistance of materials.

Religious building made up of two parts. On the one hand, the front part, where the entrance is located, in the form of a square tower crowned by a four-sided dome covered with ceramics. On the other hand, the back part, has a rectangular plan covered by a gable roof and with large side windows. All the ornamental elements that make up the ensemble are located in a neo-Gothic and eclectic tradition: bipartite windows with a column and Gothic tracery, trefoils and mouldings that serve as ogival-shaped dust guards, semicircular arches and attached columns with Corinthian capitals. The facings are of red bricks with white stuccoed recesses in the corners and framing the openings in the fashion of false arches. Access is via a staircase presided over by an ogival portal where you can read Casa Benèfica, on top of the year 1901 and a double window. There are many subsequent annexes suitable for the specific needs of the moment. Despite the construction dates given by Gaietà Buigas, 1901 is written on the façade.

Outbuildings made with exposed brick, some covered by a gable roof and others by a flat roof. The main building includes the engine and boiler rooms. This building consists of three large completely free naves and a chimney. Inside we find the water pumping bellows for the supply of an area of Barcelona and its region. The complex is surrounded by a park, known as "Parc de les Aigües".

The building of wireless telegraphy or radiotelegraphy is in the La Ricarda estate. It is a simple construction, with one body of small dimensions. The staggered gable of the side façade – a resource used by Puig i Cadafalch – gives it personality, and the rather pronounced eaves also stand out. The interior housed the apparatus room, a place for the telegraph operator and a space for public attention. The attic was the home of the telegraph operator and his family. As a great innovation at the time, there was a WC on each floor and kitchen. The building remains to this day and preserves its structure in relatively good condition. The interior, however, is destroyed and the original layout is not preserved. The existence of stained glass windows designed by Puig Cadafalch is known, but there are no remains of them. Between 1904 and 1905, Marconi built communications centres in several places across Europe. The El Prat telegraph station (1911) corresponds to a more advanced stage in technology because the antennas are exclusively made of metal. Wireless communication has been one of the most important innovations of this century. The preservation of this building is interesting for the following reasons: it is one of the few technical buildings that exist in Catalonia, it is a witness to the introduction of radio into homes and, in addition, no similar building is known from this period that has been preserved in Spain.

Torre de l’Aigua is a modernist water tank considered one of the emblematic symbols of the city. It is located in the eastern area, almost touching the bank of the Ripoll river. Between 1922 and 1967 it served as a water tank. It is a reinforced concrete tower - one of the first works in this material done in Sabadell. Its composition based on gravel, sand and water, along with some steel bars, made it possible to build a slender structure that could support the tank. Its architectural aspect is linked to the German tradition of this type of building. The structural body is made up of eight pillars with their capitals and cornice, arranged in the form of a truncated pyramid and connected to each other by a spiral staircase. At the top there is the reservoir and the viewpoint. This is made up of eight balconies with iron railings. The tank is insulated with a double wall and air chamber, with five rectangular openings under each balcony to illuminate the tank and ventilate the air chamber. Although it has an octagonal shape on the outside, the inside is circular to avoid water pressure in the corners. The building is crowned by a dome formed by eight inclined faces. Its capacity is 293.5 m3. In June 1915, faced with the problem of the city's water supply, a project and construction of a storage tower was put out to tender, with detailed guidelines by Francesc Izard, but which left freedom in terms of materials and shape. Four projects were presented, the winner being Lluís Homs. In February 1916, the works began under the direction of Josep Renom i Costa as municipal architect. The cost of the work was 104,422,70 pesetas. It was inaugurated in August 1918 with the assistance of the authorities, but it did not become operational until 1922. The tower has undergone a progressive process of abandonment, up to a point it is now completely disused. It is owned by the City Council, which has left it to the franchise company (since 1949 with a 99-year license).

Torre de forma prismàtica de secció quadrangular, de 10 x 10 m., de dues plantes d'alçada i soterrani. Sòcol de carreus i paraments de paredat de pedres regulars de forma hexagonal amb juntes de morter. Franges verticals d'obra vista en angles i com a separació d'obertures. Aquestes, emmarcades en totxo vist, col·locat a sardinell en arcs i llindes, que contribueix a realçar l'aspecte artístic de l'edifici. Coberta amb ràfec sobresortint i remats de totxo -continuació de les franges verticals- a manera de magolles.

Edifici contenidor d'un transformador de corrent elèctric. Tipus urbà, de dues plantes i coberta a dues aigües. Tester de línies abarrocades. Una mitgera dóna a un pas de vianants amb escala, que separa l'edifici de l'escola Renaixença. Obra de totxo amb façana arrebossada, emmarcada amb estuc imitant obra vista. Façana simètrica amb obertures protegides per marquesines de teula àrab vidriada. El sòcol és de pedra.

Situat al sector sud-oest de Manresa, en zona agrícola i al costat de la carretera de Manresa a Igualada (C-37), l'edifici és una bella mostra de l'arquitectura industrial noucentista del municipi. L'edifici és aïllat i està format per diversos volums coberts a diferent alçada que en conjunt dibuixen una planta rectangular. Per l'exterior té l'aspecte d'un edifici de tres plantes, però l'interior és un espai únic, amb un gran pilar, descentrat de la nau, on es recolza l'estructura metàl·lica de cavalls que suporten les voltes de maó visibles a l'exterior. La part anterior de l'edifici forma un cos d'una planta, amb un ritme de finestres-vidrieres emmarcades per un fals arc pentagonal i fusteria metàl·lica, separades per pilastres i amb barana de balustres de secció rombal al damunt. Darrere d'aquest cos, i reculades, resten les altres dues naus. La Central Elèctrica, construïda per Catalana de Gas i Electricitat, va quedar inactiva el 1989. Actualment és propietat d'ENDESA, que l'ha restaurat i ha instal·lat la seva nova seu de la Catalunya central.