Portage Park on the Northwest sideWhen Chicago incorporated in 1837 it chose the motto "Urbs in Horto" a Latin phrase which translates into English as "City in a Garden", and today the Chicago Park District consists of 552 parks with over 7,300 acres (30 km²) of municipal parkland as well as 33 beaches, nine museums, two world-class conservatories, 16 historic lagoons and 10 bird and wildlife gardens. Lincoln Park, the largest of these parks has over 20 million visitors each year, making it second only to Central Park in New York City.20 Nine lakefront harbors located within a number of parks along the lakefront render the Chicago Park District the nation's largest municipal harbor system. In addition to ongoing beautification and renewal projects for existing parks, a number of new parks have been added in recent years such as Ping Tom Memorial Park, DuSable Park and most notably Millennium Park. 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 which are also home to both the Chicago Botanic Garden and Brookfield Zoo.