The Serra de Collserola (Catalan pronunciation: [ˈsɛrə ðə ˌkɔʎsəˈɾɔlə]), or simply Collserola, is a mountain range between the rivers Besòs and Llobregat. It is part of the Catalan Coastal Range.

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Serra de Collserola
The Collserola range rising above Barcelona
Highest point
Elevation	516.2 m (1,694 ft)
Coordinates	41°24′44″N 2°04′26″E
Geography
Serra de Collserola Catalonia, Spain
Location	Barcelonès (Catalonia)
Parent range	Catalan Coastal Range
Geology
Mountain type	Metamorphic rock

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These mountains separate Barcelona from the Vallès plain and their tallest peak is the Tibidabo, at 512 m. Other main summits are: Turó del Puig, Puig d'Olorda, Turó de Valldaura, Turó de la Magarola, Puig d'Ossa, and Puig Madrona. The valleys of the Llobregat and Besós Rivers, the plain of Barcelona, and the Vallès basin, mark the geographical boundaries of the Collserola massif.

To preserve the area, in 1987 the Parc de Collserola (Collserola Park), which has an area of 84.65 km², was established.^[1] It is one of the largest metropolitan parks in the world - 8 times larger than the Bois de Boulogne in Paris, and 22 times larger than Central Park in New York.

In the park, over a thousand major plants and around thirty plant communities have been catalogued; including forests of Aleppo pines and nut pines, evergreen oaklands, riverside copses, maquis and scrublands, brush, and savannah grasslands. This diversity allows for the existence of a rich, varied wildlife; including wild boar, fox, genet, stone marten, badger, rabbit, and squirrel; blue tits, whitethroats, treecreepers, woodpeckers, bee eaters, doves, goshawks, sparrowhawk, and rat-catching eagles; salamanders, newts, green tree frog, the small southern frog, toads, the small spotted toad, the Mediterranean turtle, the giant turtle, the ocellated lizard, snakes, and so on.

On the Vilana hill, of 445 m, stands the Torre de Collserola (Collserola Tower), a telecommunications tower built in 1992 for the use of Olympic games. It is 288.4 m and was built by the British architect Sir Norman Foster.

The Collserola Park is used extensively by the inhabitants of Barcelona and the other towns that border it. It is popular for walking, cycling and birdwatching. There are numerous restaurants where families go during the weekends. A path that follows the ridge of the Serra, known as the "Carretera de les Aigües" (Water Road), has been extensively improved for cyclists. The Barcelona city plan intends to include it in a cycle track that completely circles the city.