History: The New York City Subway, United States

History
A demonstration for an underground transit system in New York City was first built by Alfred Ely Beach in 1869. His Beach Pneumatic Transit only extended 312 feet (95 m) under Broadway in Lower Manhattan and exhibited his idea for a subway propelled by pneumatic tube technology. The tunnel was never extended for political and financial reasons, although extensions had been planned to take the tunnel southward to The Battery and northwards towards the Harlem River. The Beach subway was demolished when the BMT Broadway Line was built in the 1910s; thus, it was not integrated into the New York City Subway system.
The first underground line of the subway opened on October 27, 1904, almost 35 years after the opening of the first elevated line in New York City, which became the IRT Ninth Avenue Line. The Great Blizzard of 1888 helped demonstrate the benefits of an underground transportation system. The oldest structure still in use opened in 1885 as part of the BMT Lexington Avenue Line in Brooklyn and is now part of the BMT Jamaica Line. The oldest right-of-way, that of the BMT West End Line, was in use in 1863 as a steam railroad called the Brooklyn, Bath and Coney Island Rail Road.