Hanoi Train Street refers to two separate sections of the city where the Hanoi to Ho Chi Minh City railway line runs through an extremely tight corridor between houses and cafes. The gap between the passing train and the building facades is measured in centimetres. The street has been inhabited since before the railway was built under French colonial administration in the early 20th century - residents adapted their daily lives entirely around the train schedule long before tourists arrived.
After images circulated online in the mid-2010s, the street became one of the most photographed spots in Vietnam. Two sections are worth knowing: the Old Quarter section (enter via 5 Trần Phú, near Ga Đông Dương station) is livelier and more atmospheric, especially at night; the South Side section (enter via 210 Lê Duẩn) is calmer, less crowded, and easier to find a good seat during the day.