[6] Inside the park there are different facilities —such as a 180 m long swimming pool or a large-scale train that runs through the center of the park— and events are held annually, such as the Jazz Picnic or the Festival of Colors, which attract thousands of spectators.

Since the Neogene, the park has been naturally shaped by the fluvial erosion of the waters of the Monner and Vallparadís torrents, forming part of the Catalan pre-coastal depression.

[8] In 1997, through a series of archaeological excavations that lasted more than two years at the Cal Guardiola site, some 26,000 fossils were found,[9] of which approximately 3,000 remains corresponded to mammals.

The torrents that occupied the park were inhabited by several agricultural settlements until the end of the 19th century, when the city of Terrassa was affected by the transformations of the municipality due to the arrival of the railroad in 1856 —in the northernmost part of the park— and the first urban planning project by Miquel Curet in 1878.

[13] Thus, in 1895 the construction of the Pont del Passeig was adjudicated, considered the first modern structure in the park, and in 1915 the first urban planning project was carried out by Josep Maria Coll i Bacardí.

[14] The complex, which encompasses both the late and early medieval periods,[14] was built on a small hill on both sides of the Vallparadís and Monner torrents that make up the park, at a time when Christianity went from being a tolerated religion to an official one.

[20] The Carthusian castle of Vallparadís, located in the easternmost part of the park's center, was a fortification documented as early as 1110, when the land was purchased from the then Count of Barcelona, Ramón Berenguer III.

[21] The building rises on the edge of a large embankment of the park and has a rectangular plan, walls with arrowslits, towers at each of its corners and three bestorres on its west side.

It is worth mentioning a two-story cloister —the lower one with chaotic openings and the upper one more stable with pointed arches— and geometric capitals without decoration with the ancestral chapter house on the east side, covered with a rib vault.

[21] Currently, the castle is the main section of the six that make up the museum complex of Terrassa and its exhibition is structured in different areas such as the natural environment, with the main habitats of the Vallés —forests, agricultural areas, streams and torrents—, prehistory and ancient world —with elements of the archeological sites of Egara, among others—, medieval world —with archaeological remains of the churches of Sant Pere, the castle of Vallparadís and the old castle-palace of Terrassa, among others—, modern era —with religious elements such as retables from the 17th and 18th centuries—, contemporary age —with rural and industrial life in the 19th century and culture and society —with a collection of paintings from the 20th century.

[22] In 2003, the Casa Baumann was declared a Bien Cultural de Interés Local with registration number 6706-I,[23] and the building is currently used as the headquarters of the Youth and Children's Leisure Service of the City Council of Terrassa.

[24] The retaining walls of the Casa Salvans are the work of Lluís Muncunill i Parellada and are located on Salmerón Street, next to the park.

[33] Once past the Vallparadís swimming pool, heading south, is the Font d'en Serracanta walkway, a footbridge inaugurated on April 28, 2007, next to the urbanized area between the Pont del Gall and the Santa Eulàlia Avenue.

[29] Finally, on the approach to the southern end of the park, is the Pont de la Unió, a viaduct inaugurated on February 19, 2010, in the presence of the then mayor, Pere Navarro i Morera.

It consists of a 107 m long frame and its name was chosen by the students of the schools President Salvans, Pau Vila, Andersen and Sagrat Cor de Jesús.

At the northern end of the park, next to the Parc del Nord, is located "Homage to Malevich" (in Catalan, Homenatge a Malèvitx).

[37][38] It consists of poles of more than three meters and at its end there are five different types of elements of nature and geometric shapes: the moon, the sun, the lightning bolt, a tyrangle and a rhombus in blue, yellow, red, green and pink colors, respectively.

[38] In 2001 the proposal was approved for the installation in Vallparadís Park of the "Monumento a las víctimas del terrorismo" (Spanish for: Monument to the victims of terrorism) of 3 m in height, work of Jesús Fructuoso.

[39] It is located on the main promenade of the park, at the height of the Rambla de San Nebridio, next to the weather station, very close to the entrance of the swimming pool.

The sculpture was inaugurated on March 23, 2002, by the then mayor, Manuel Royes, thanks to which the author was able to symbolize, in his own words, "a door to freedom, to a future and to peace".

[45] Being an urban park located in full contact with the municipality of Terrassa, Vallparadís has the same fauna that characterizes the city, basically composed of small mammals such as various types of bats and shrews, and others more common in large populations such as mice and cats.

[46] As for invertebrates, you can find in the park coleoptera such as acilius sulcatus or stictonectes lepidus, lepidoptera such as the Marsh fritillary or the Spanish moon moth and gastropods with various types of snails.

At certain times of the year you can see migratory birds such as the black redstart, white wagtail, the European golden oriole or the common house martin.

In the southern center of the park, between the Pont del Cementiri Vell and the Montcada road, is the municipal swimming pool, also called Vallparadís lake, which opens at the beginning of the summer, at the same time as Saint John's Eve and the end of the academic year.

It has a 340 m route for a track gauge of 127 and 184 mm with eleven switches, two bridges —one of them rotating—, two tunnels, a traffic circle, a locomotive garage and a workshop.

[50] Since 1996, between October and June, every week, the Vallparadís Railway has made its facilities available to the Municipal Board of Education so that students and teachers can learn about the history and operation of the miniature train.

Musicians such as Stan Getz, Chet Baker, Dexter Gordon, Tete Montoliu, Dizzy Gillespie, Stéphane Grappelli, Elvin Jones, Art Blakey and Ray Brown have performed on the stages of Vallparadís.

It is a party of Hindu origin that is celebrated to honor the arrival of spring and consists of throwing large amounts of powdered pigments of different colors into the air so that, when falling, it mixes and permeates among all participants.

[57] The burial of the carnival (in Catalan, enterrament del carnestoltes) ends every year in the Park of Vallparadís, on Ash Wednesday.

On the last day, the so-called "gran festa del dilluns" (in Catalan, great Monday party) takes place, in which hot chocolate is distributed, stories are told, the water festival and a concert for children are held.