By the time the first subway opened, the lines had been consolidated into two privately owned systems, the Brooklyn Rapid Transit Company (BRT), and the Interborough Rapid Transit Company (IRT). The city built most of the lines and leased them to the companies. The first line of the city-owned and operated Independent Subway System (IND) opened in 1932; this system was intended to compete with the private systems and allow some of the elevated railways to be torn down. In 1940, the city bought the two private systems. Some elevated lines ceased service immediately while others closed soon after. Today the elevated lines run in the boroughs of Brooklyn, Queens and the Bronx. In Manhattan elevated lines have completely disappeared, except in some parts of Harlem. Some initiatives such as the High Line Park has taken part of the old elevated lines and turned them up on public spaces.