final part of the outfield wall (the Continental Airlines ad, the out-of-town scoreboard and the remaining part of the advertising panel to its right) was taken down February 24, 2010. By March 25, the entire upper deck was taken down. Following an unsuccessful attempt to save Gate 2 (the only portion of the original Yankee Stadium that mostly remained unaltered after the venue's renovation), demolition of the outer walls of the stadium began on March 29. Demolition of the original Yankee Stadium was completed on May 13, 2010. A park complex called Heritage Field was constructed on the old stadium site, accounting for 40% of the original parkland that is now occupied by the new Stadium. The groundbreaking ceremony for Heritage Field took place on June 29, 2010. Heritage Field was officially opened in April 2012. At its opening, a blue outline showing the location of the original Yankee Stadium diamond was interwoven into the grass, showing that second base on the new field is in the approximate location of home plate of the original diamond. Features Design Yankee Stadium was the first three-tiered sports facility in the United States and one of the first baseball parks to be given the lasting title of stadium. Baseball teams typically played in a park or a field. The word stadium deliberately evoked ancient Greece, where a stade was a unit of measure—the length of a footrace; the buildings that housed these footraces were called stadia. Yankee Stadium was one of the first to be designed with the intent to be a multi-purpose facility. The field was initially surrounded by a (misshapen) running track, which effectively also served as a warning track for outfielders, a feature now standard on all major league fields. The left and right field bleacher sections were laid out roughly at a right angle to the third base stands, to be properly positioned for both track-and-field events and football. The large electronic scoreboard in right-center field, featuring both teams' lineups and scores of other baseball games, was the first of its kind. As Yankee Stadium owed its creation largely to Ruth, its design partially accommodated the game's left-handed-hitting slugger. Initially the fence was from home plate down the right-field line, referred to as the "short porch" and to near right field, compared with to the deepest part of center field, nicknamed "Death Valley". The right-field bleachers were appropriately nicknamed