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Longstone's most dramatic features are the Slateford Aqueduct (1822) carrying the Union Canal and the adjacent railway viaduct (1842). Underneath these runs the Water of Leith, and the canal may sometimes be seen pouring out through an overflow down into the river. The Water of Leith's visitor centre lies almost underneath the aqueduct here.
The Cross Keys is a long-established pub in the area, which also contains one of the city's main bus depots, belonging to Lothian Buses. There are also a small number of shops and a car dealership, in addition to a Jehovah's Witnesses "Kingdom Hall". The local Church of Scotland is the Slateford Longstone Church of Scotland.
Housing is a mixture of terraces and flats, many consist of local authority housing, private housing and Ministry of Defence (armed services) housing.
Longstone has two educational facilities. Longstone Primary School which is a non denominational primary school built in 1957 and based at Redhall Grove, although originally was based in Longstone Road. Recently an additional school built next to Longstone Primary School called Redhall Primary School supports children with moderate learning difficulties.