Circle route
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A circle route is a public transport route following a path approximating a circle or at least a closed curve.
High Street Kensington station on the Inner Circle line in London, the world's first circle line.
Line 10 of the Beijing Subway, the world's second longest circular metro line
Glasgow Subway
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The Glasgow Subway is an underground light metro system in Glasgow, Scotland. Opened on 14 December 1896, it is the third-oldest underground rail transit system in Europe after the London Underground and the Budapest Metro. It is also one of the very few railways in the world with a track running gauge of 4 ft. Originally a cable railway, the subway was later electrified, but the double-track circular line was never expanded. The line was originally known as the Glasgow District Subway, and was thus the first mass transit system to be known as a "subway"; it was later renamed Glasgow Subway Railway. In 1936 it was renamed the Glasgow Underground. Despite this rebranding, many Glaswegians continued to refer to the network as "the Subway". In 2003, the name "Subway" was officially readopted by its operator, the Strathclyde Partnership for Transport (SPT).
West Street in 1966 with red painted train
Partick station
An Inner Circle train arrives at West Street station in 2004.