As the city expands, housing developments border Amager Nature Park. With over 3,000 acres, the park is one of the largest close to a metropolis – within biking distance. Grazing cows, horses and sheep keep trees and large plants down. The park includes everything from savannah, dense woods and salt marshes to bird-rich lakes and canals with frogs and snakes. Activities range from biking and walking to finding peace and studying rare plants.