Manhattan business days, the influx of commuters increases this number to over 3.9 million, or more than 170,000 people per square mile (65,600/km). Manhattan has the third-largest population of New York City's five boroughs, after Brooklyn and Queens, and is the smallest borough in terms of land area. Many districts and landmarks in Manhattan are well known, as New York City received a record 62.8 million tourists in 2017, and Manhattan hosts three of the world's 10 most-visited tourist attractions in 2013: Times Square, Central Park, and Grand Central Terminal. The borough hosts many prominent bridges, such as the Brooklyn Bridge;
5 (New York City Subway service) 5 (New York City Subway service) The 5 Lexington Avenue Express is a rapid transit service in the A Division of the New York City Subway. Its route emblem, or "bullet", is colored apple green since it uses the IRT Lexington Avenue Line in Manhattan. The 5 operates at all times. Weekday rush hour and midday service operates between Dyre Avenue in Eastchester, Bronx and Flatbush Avenue–Brooklyn College in Midwood, Brooklyn, making local stops in the Bronx and express stops in Manhattan and Brooklyn; during rush hours in the peak direction, 5 trains operate express in the Bronx between East