The district is most famous for the London Aerodrome which later became RAF Hendon; from 1972 the site of the RAF station was gradually handed over to the RAF Museum. The railways reached Hendon in 1868 with Hendon station on the Midland Main Line, followed by London Underground further east under the name Hendon Central in 1923. Brent Street emerged as its commercial centre by the 1890s. A social polarity was developed between the uphill areas of Hendon and the lowlands around the railway station.