Minneapolis has 81 residential neighborhoods offering a broad range of housing to 161,000 households. Minneapolis is well known for its concerned and active citizenry and partnerships of government, business and citizens created to improve neighborhoods and create economic opportunities. More than 123,000 people work in downtown Minneapolis. Second story skyways keep downtown busy and thriving even on the coldest days. Nicollet Mall a 12 block long shopping area closed to automobile traffic and flanked by some of the nation's finest department stores and specialty stores - is the retail heart of Minneapolis. It also has Gaviidae Common, City Center, and the Crystal Court. A short distance from the heart of downtown Minneapolis is "Uptown," which houses Calhoun Square. The Twin Cities is second only to New York in per capita attendance at theater and arts events. Minneapolis has more than 30 theaters. The Guthrie Theater and the Children's Theatre Company are recognized as two of the country's best. The city also boasts two world-class art museums, the Minneapolis Institute of art and walker art center, and is home to the internationally acclaimed Minnesota Orchestra. Forty-seven thousand students are enrolled in Minneapolis public primary and secondary schools. Non-public primary and secondary school enrollment is about 7,000. The city offers several vocational training and specialty schools. The main campus of the University of Minnesota sits on the banks of the Mississippi just minutes from downtown. It is a major research institution with a long tradition of community and public service and ranks among the top 20 universities in the U.S. It is also one of the largest; 1996 enrollment totaled more than 37,000. Other institutions of higher education in Minneapolis include the Minneapolis Community and Technical College, the Minneapolis College of Art and Design, Augsburg College and the University of St. Thomas. Three professional major league teams call Minnesota home. At the Hubert H. Humphrey Metrodome, 55,000 fans can watch the world champion Minnesota Twins in action. When the Minnesota Vikings are in town, the Dome can seat 62,000 football enthusiasts. In 1990, the Target Center was constructed downtown for the Minnesota Timberwolves of the National Basketball Association. Minneapolis has the capacity of hosting large events because of the Convention Center. Minneapolis residents not only watch sports, they participate as well. Playing in summer softball leagues, golfing, and jogging, biking or roller skating around the city's lakes are favorite pastimes. Residents enjoy boating, fishing, and swimming in the summertime and ice skating, ice fishing, skiing, snowmobiling, and ice sailing during the winter. Early in Minneapolis' development, the land around five large lakes was dedicated to the public as parkland. With one acre of parkland for every 57 residents, outdoor recreation is an important part of life.