"City in a Garden". Today, the Chicago Park District consists of 552 parks with over 7,300 acres (3,000 ha) of municipal parkland . There are 33 sand Chicago beaches , a plethora of museums, two world-class conservatories, 16 historic lagoons, and 10 bird and wildlife gardens. [ 185 ] Lincoln Park , the largest of the city's parks, covers 1,200 acres (490 ha) and has over 20 million visitors each year, making it second only to Central Park in New York City in number of visitors. [ 186 ] With berths for more than 6,000 boats, the Chicago Park District operates the nation's largest municipal harbor system. [ 187 ] In addition to ongoing beautification and renewal projects for the existing parks, a number of new parks have been added in recent years, such as the Ping Tom Memorial Park in Chinatown, DuSable Park on the Near North Side, and most notably, Millennium Park in a section of one of Chicago's oldest parks, Grant Park in the Chicago Loop. The wealth of greenspace afforded by Chicago's parks is further augmented by the Cook County Forest Preserves , a network of open spaces containing forest, prairie , wetland , streams, and lakes that are set aside as natural areas which lie along the city's periphery, [ 188 ] home to both the Chicago Botanic Garden in Glencoe and the Brookfield Zoo in Brookfield, Illinois . [ 189 ] In addition, Washington Park is one of the cities biggest parks as well;