on the NRHP on September 29, 1977, and It was granted local district designation by the Naperville City Council in 1986. The buildings represent significant examples of local architecture and are among the city's most important cultural and historical heritage. The Old Nichols Library building, which served as Naperville's original public library, was designated a local landmark in 2017. Naper Settlement is an outdoor history museum representing the era of Naperville's founding. Naper Settlement was established by the Naperville Heritage Society and the Naperville Park District in 1969 to preserve some of the community's oldest buildings. Reconstructions of Fort Payne and the Pre-Emption House stand as part of the museum. Moser Tower and Millennium Carillon The 158-foot-tall Moser Tower is just north of Aurora Avenue and at the base of Rotary Hill, just west of Downtown Naperville. The Millennium Carillon is designated as one of the four largest carillons in the world, with 72 bronze bells weighing from 10 pounds to the 6-ton "Captain Joseph Naper Bell". It was dedicated in an Independence Day event on June 29, 2000, with a reception attended by over 15,000 people. The carillon is manually or computer-playable, with most performances played by hand, but with half the bells played by a computer-controlled system at set times during the day. Other Museums The DuPage Children's Museum was founded in 1987; and moved from Wheaton to its Naperville location in 2001. The Museum was rebuilt and redesigned in 2015. Parks and recreation Naperville Park District The Naperville Park District manages and provides leisure and recreational activities for Naperville and nearby residents. The District was established by referendum in 1966, but a current park, Centennial Beach, was founded in 1932. As of 2021, the Park District manages over of open space, including over 136 parks, two golf courses, 73 playgrounds, and 70+ miles of trails. Riverwalk The Park District is responsible for the Naperville Riverwalk, construction of which began in 1981, marking the 150th anniversary of the first Joseph Naper's settlement. The Naperville Riverwalk is miles long and runs along the West Branch of the DuPage River. It consists of brick paths, fountains, and covered bridges. In addition, the Riverwalk features fountains, art pieces, and nearby resuraunts. The Naperville Riverwalk Commission has started a plan to expand the riverwalk greatly, in the "Riverwalk 2031 Master Plan". Some of the details of this plan includes extending the riverwalk