Sierra de Guadarrama National Park (Spanish: Parque Nacional de la Sierra de Guadarrama) is a national park in Spain. It covers about 340 square kilometres (131 square miles). The park is one of the biggest national parks in Spain. Only four national parks are bigger.

Guadarrama National Park has eleven different types of places for plants and animals to live (ecologies). More than 1,280 species of animals live in the park. Thirteen of them are endangered. There are more than 1,500 types of plants that come from the area. There are more than 30 types of vegetation.

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