The Dehesa Park is the largest urban park in Catalonia, located between the rivers Ter, Oñar and Güell, to the west of the historic centre of the city.

It covers an area of 40 hectares, nine of which are shaded walkways, covered by the canopy of hundred-year-old plane trees - the park has some 2,605 plane trees, hybrids of the American and Oriental species, most of which were planted around 1850 and are therefore 172 years old. The close spacing of the specimens has forced them to grow taller than they are wide, which has resulted in them reaching exceptional heights of up to 60 metres.

In one of the corners of the park are the gardens of the Dehesa, a space surrounded by a stream where you can observe different plant species of considerable interest both scientifically and purely recreationally. Mallards are often seen here, especially swimming in the water, or walking in the surrounding area.

La Dehesa, due to its location at the confluence of the rivers Ter, Oñar and Güell, was originally an area of sandy land formed by the sedimentation of the materials transported by these rivers. This area was often flooded by the waters, mainly those of the Ter, which also flooded the city during the strongest floods.

The Dehesa and the rest of the land on the banks of the Ter as it passes through Girona were donated to the city in 1423 by Queen Maria Victoria, who ceded part of it; the following year, her husband, Alfonso V the Magnanimous, made a second donation, and finally, in 1510, King Ferdinand the Catholic definitively transferred all the land that still belonged to the crown. The purpose of the donations was so that the city could use them as a defence against the floods of the river and as a source of income to compensate for the damage caused by the floods. The vegetation that grew spontaneously on them could serve as a natural barrier against floods. However, in order to obtain some profit, various activities were carried out on them.

The main economic activity carried out was the planting of trees, normally poplars and poplars, followed by the corresponding felling to obtain money from the sale of the wood. In 1794, the first felling took place to prepare military defences.