Springfield Public Library, the Massachusetts Data Center, and Federal Courts) and residential neighborhoods like Mattoon Street and the Apremont Triangle atop the bluff. Even by urban, New England standards, Springfield's Metro Center - stretching from The Arch at the north end of Main Street to swath cut through the city by the 2011 Greater Springfield tornado near Union Street - remains easily walkable, with characteristically New England architecture surrounding Court Square, the Neo-Classical Springfield Municipal Group, the post-modern MassMutual Center, the varied Club Quarter (by Worthington Street,) Union Station, and the predominantly Neo-Classical architecture of aforementioned cultural institutions atop the first bluff. Erecting the elevated, (later walled) I-91 highway along Springfield's Connecticut Riverfront during the early 1960s disrupted numerous neighborhoods and continues acting as a barrier between, for example, the Basketball Hall of Fame and Metro Center, making it difficult to access the Connecticut River. In 2010, the Urban Land Institute suggested ways to reunite Springfield with the Connecticut River – and the riverfront Basketball Hall of Fame – however, as yet no action been taken. Eastern Metro Center rises steeply along a prominent bluff. Atop this bluff sit the Quadrangle-Mattoon Street Historic District, The Kimball Towers, and The McIntosh – a residential district that is partly protected by the Apremont Triangle National Historic District – and further eastward, the Quadrangle cultural district, the Springfield City Library, and ultimately, the Springfield Armory National Park. In recent years, Metro Center has become an increasingly popular residential neighborhood for those who seek an urban lifestyle without high prices – among them, bohemians, artists, LGBT residents, and empty-nesters. As demographics have changed in Metro Center, Springfield's crime ranking has dropped significantly – in 2010, Springfield ranked 51st in the United States' "City Crime Rankings," after ranking 18th in just 2003, with its overall crime rate having fallen by more than 50 percent. Directly south of Metro Center, along Main Street, is Springfield's South End – the center of its Italian community. The South End features numerous Feast Day celebrations throughout the year, as well as dozens of Italian restaurants, pastry shops, and cultural landmarks. The Naismith Memorial Basketball Hall of Fame is located on the riverfront in the South End; however, it is cut off from the neighborhood, Main Street, and Metro Center by Interstate 91. Just east of the South End, along one of the Connecticut River's most prominent bluffs, is Springfield's