which was also planning to construct and subsequently relocate to a new building on Public Square—Key Tower (formerly known as Society Center). Because Society did not need two skyscrapers, plans for the Ameritrust building across the square were scrapped. Other buildings that face the square include 55 Public Square (1958), 75 Public Square (1915), the Society for Savings Building (1890), Metzenbaum Courthouse (1910), the former May Company department store (1914), the Park Building (1903), and the Renaissance Cleveland Hotel (1918). The demolished Cuyahoga Building (1893) and Williamson Building (1900) formerly stood on the site of 200 Public Square. Public Square is often the site of political rallies and civic functions, including a free annual Independence Day concert by the Cleveland Orchestra. At the Balloonfest '86, close to 1.5 million balloons rose up from Public Square, engulfing the Terminal Tower and setting a world record. 2010s renovation In collaboration with landscape architect James Corner, the city in 2009 began to explore concepts for a redesign of the square. In October 2011, Cleveland mayor Frank Jackson proposed his plan to redevelop the square, which included closing Superior Avenue and Ontario Street to create a large green space in the center. On October 23, 2014, the Cleveland Landmarks Commission approved a plan which closed Ontario Street but kept Superior Avenue open to bus traffic, and kept the Soldiers' and Sailors' Monument prominent. The project began construction on March 9, 2015, and was officially opened on June 30, 2016. Public Square's development was showcased during the Cleveland Cavaliers championship parade as a welcome sight with much of the construction materials removed to display the renovation. At first, buses did not run along Superior Avenue as planned, but in order to avoid a $12 million repayment of grants to the Federal Transit Administration, the Greater Cleveland Regional Transit Authority agreed to run buses along it by March 2017. The City of Cleveland installed Jersey Barriers along Superior Avenue due to fears of terrorism contrary to the original design. An episode of NBC's American Ninja Warrior was held in Public Square and aired in July 2017 A privately operated cafe, Rebol, located in the southwestern area of Public Square, opened in July 2016. Transportation Road Public Square is bounded by East Roadway and West Roadway at the western and eastern ends and by Rockwell Avenue and South Roadway at the northern and southern ends. In total,