The factory site from Colònia Güell is separated from housing and services. It rises to the east of the Masia de Can Soler de la Torre, defining a closed enclosure with different buildings; some connected to each other, but all of them connected by streets that allow the traffic of some buildings to the others. The site still maintains the original structure, and the streets used to be named verbally by the dominant productive section. Although the site is slightly transformed, much of the original buildings are preserved, all of them made of exposed brick and of three types: factory floors, lattice buildings, and sawtooth roof buildings. Among these buildings, the Spinning one stands out, built following the English model, also called "Mancunian", and which consists of the distribution of the building on a ground floor and four equal floors of open plan, with large windows and where each of which comprised a different process of spinning. The steam engine was located there. In other buildings, the layout of the brick stands out, placed on an edge forming small openings in a rectangular or triangular shape, which facilitated ventilation. Mention should also be made of the Calderes building, located between the "streets" of the steam engine and that of the dyes. Right in front of this construction with a rectangular plan and with a gable roof is the body of stairs, elevators and transmissions of the spinning building. In the basement of the "street" steam engines were the coal mines, and at the end of the street there is the old building of the electricians and the transformer that was bombed in 1938, specifically on the 11th of September. The factory also had two large water tanks, one with a square plan, attached to the wall facing Can Soler de la Torre, and which is currently an industrial building. The other, built more recently (since it is made of concrete) has a circular floor plan and overlooks Plaça de la Masia. The colony, unlike others, never used hydraulic power, and worked with steam. Evidence of this is the large cylindrical chimney, 46 m high, which is still standing. The wrought iron grill of the main entrance to the colony is also preserved, as well as the grill of the door through which the workers accessed, apart from other annexed buildings where there would be offices and services of the factory. Other elements preserved in the site are the tunnels for the extraction of burrs and the transmission tunnels (currently used for services). The four wells are also preserved, two out of service, the one in front of the spinning mill and the one of the spinning mills, and two in service. This well was one of the most important built at the end of the 19th century, it was 14 m deep. In 1908, a second group of boilers and a steam engine was installed in the building. The factory was electrified in 1915. Although there are some companies based there, the buildings are in a dilapidated state and have lost their roofs. The enclosure is completely enclosed by a wall that delimits its perimeter.

After the death of Baldiri Soler de la Torre i Ubach in 1860, his younger brother, Joan, sold the Mas de Can Soler de la Torre and all its land to the industrialist Joan Güell i Ferrer. In 1890, Joan Güell's son, Eusebi Güell, began the construction of the Colònia on the grounds of Can Soler, and commissioned several projects to Gaudí and other renowned architects such as Francesc Berenguer i Mestres, Joan Rubió and Josep Canal. The colony had a doctor's house, a pharmacy, an inn, a school, shops, a theatre, a cooperative, a chapel, workers' housing and, of course, the factory, unarguably the most important element. All this was concentrated in a total area of about 160 hectares. It was originally the "Factory of corduroy and velvet Güell i Cia" and its history was always linked to the foundation of the colony, becoming a clear example of the impetus that the textile industry had in Catalonia from beginning of the 20th century. In the factory, the cotton, which came from America, was transformed into corduroy and velvet. Each of the factory buildings was intended for a specific task within the process of transforming the raw material into the final product. A reflection of this can be seen in the name verbally given to the streets, which refers to said activity, such as the spinning building, the looms, the dye, banners, etc. Apart from these buildings, inside the factory there were also some service buildings such as the offices, the medical office, the draftsman's office, auxiliary workshops for carpentry, tinkering, electricians, brokers, masons and painters. The transport of material between the different buildings was done by means of a network of rails and wagons that were pushed throughout the factory premises. On the 11th of September 1938, a national plane dropped two bombs on the factory. The first hit the transformer and left the factory without power. The second fell in some carob fields, outside the compound, and did not explode. Neither caused personal injury. In 1944, the factory was acquired by the Bertrand Serra family. After almost a century of uninterrupted production, in 1973 the factory closed for good, and the premises remained unused until the 1980s, when it was leased to the Crèdit & Docks company for warehouses, and economic activity was reactivated with the installation of different workshops and companies. Later it was sold in parts and a community of owners of the industrial site was formed. However, the site was not ready for the current needs of the industry and, despite some improvements, it was not fully consolidated. An urban planning that has been postponed for years and that has encountered many difficulties despite the efforts made was pending. In 2002, the company Colònia Güell S.A. bought everything that was for sale in the site, 62%, with the aim of installing a business park or Brain Business Park, that is to say, a space for the development of companies and economic activity specifically related to the world of technology, of 70,000 m². The architect Òscar Tusquets restored and rehabilitated the Filatura and Tint Vell building between 2001 and 2004, where different offices are currently based. The restoration of Òscar Tusquets earned the Bonaplata Prize for Rehabilitation of Industrial Buildings in 2005. The Special Plan drawn up by Jordi Rogent and Manuel Giralt, which has not been implemented, received the Citta de Terni Industrial Archeology Prize the same year. Various circumstances have stopped the start-up and full recovery of the site until today.

The building of Les Filatures and Tint Vell stands out as the standards, the chimney, the wells and the tanks.