the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020. The Bears play their home games at Soldier Field. The city has major financial and futures exchanges, including the Chicago Stock Exchange, the Chicago Board Options Exchange (CBOE), and the Chicago Mercantile Exchange (the "Merc"), which is owned, along with the Chicago Board of Trade (CBOT) by Chicago's CME Group. [citation needed], 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 outskirts,[274] including both the Chicago Botanic Garden in Glencoe and the Brookfield Zoo in Brookfield. Other prevalent European ethnic groups include the Czechs, and Ukrainians. Chicago is a major world convention destination. Lincoln Park, on Chicagos North Side, attracts 20 million visitors annually. The city typically sees less snow and rain in winter than that experienced in the eastern Great Lakes region. City of Chicago :: Facts & Statistics [310] The magnet school with the largest enrollment is Lane Technical College Prep High School. [122][123], The Merchandise Mart, once first on the list of largest buildings in the world, currently listed as 44th-largest (as of 9September2013[update]), had its own zipcode until 2008, and stands near the junction of the North and South branches of the Chicago River. In the spring of 1937 Republic Steel Works witnessed the Memorial Day massacre of 1937 in the neighborhood of East Side. Learn about one of the world's oldest and most popular religions. The city and its surrounding metropolitan area contain the third-largest labor pool in the United States with about 4.63million workers. By 1935 the Workers Alliance of America begun organizing the poor, workers, the unemployed.