The Museum of Fine Arts of Castellón is a building designed by Mansilla plus Tuñón Arquitectos, which has been recognised in numerous national architecture awards, such as the 2001 FAD Architecture Prize, the 2001 Excellent Work Prize awarded by Fomento de Construcciones y Contratas, and the 1999-2000 Architecture Prize awarded by the Official College of Architects of the Valencian Community. It was also a finalist in 2001 for the European Union's Mies van der Rohe Prize for Contemporary Architecture, and in the same year a finalist in the 3rd Ibero-American Biennial of Architecture and Urbanism.

This museum is one of the oldest in the Valencia region, as it was founded in 1845, thanks to artistic funds received from the disentailment of convents at the beginning of the 19th century. At first it was called the Provincial Museum of Fine Arts, this museum had different venues in different parts of the city, until 2001, when the current headquarters was inaugurated in Avenida Hermanos Bou.

The building is a clear reference of contemporary architecture, designed by the architects Emilio Tuñón Álvarez and Luis Moreno Mansilla. It has an infrastructure of six exhibition rooms, one of which is dedicated to temporary exhibitions, it also has a library, as well as offices, a conference room and an auditorium, with which different cultural works are carried out, such as the different concerts they offer. This corresponds perfectly to the society that manages it, the so-called Cultural Project of Castelló, better known as Castelló Cultural, which offers diverse cultural activities of all kinds, among them those that are carried out in this museum.

With regard to the museum's collection, it is made up, in addition to the Diputación's collection, which we have already mentioned, of deposits from centres such as the Prado Museum, also thanks to its disentailment, as well as donations, among which those of Justo Bou Álvaro, Juan Bautista Porcar and Francisco Esteve Gálvez stand out.

The rooms described above are arranged in four blocks around a cloister. The permanent collections are divided into three main areas: Archaeology-Ethnology, Ceramics and Painting-Sculpture.

In the basement is the Archaeology and Ethnology section, with its own itineraries, which is also divided into five exhibition areas: Art and communication, showing the importance of communication in human societies, highlighting art, where the exhibition of Levantine cave art stands out; the arts of subsistence, which shows us the way of life from the first settlers of the lands of Castellón; food producers, included in the ethnology of the lands of Castellón; technology and cultural change and urban societies, these last two axes are dedicated to explaining the ethnological evolution in the territory, from prehistoric times to the present day.

On the ground floor and the first floor is the most important collection, which consists of traditional Valencian ceramics from the 15th to the 19th centuries, with more than 800 pieces from different places, all belonging to the legacy of Francisco Esteve Gálvez. On the first floor there are paintings and sculptures, almost all of them from the disentailment. On the third floor, on the other hand, there are works by artists linked to the Diputación de Castellón, such as Gabriel Puig Roda, Francisco Viciano, Francisco Gimeno Baron or Juan Bautista Porcar Ripollés, among others, as well as other renowned artists from Castellón.