The Devonshire Street Tunnel is a 300-metre-long (980 ft) pedestrian tunnel located beneath the southern end of Central station connecting the suburb of Surry Hills with Railway Square in the Sydney central business district.

[1] In the early 1970s, the tunnel was refurbished with terrazzo panels and fluorescent lights and extended 80 metres (260 ft) to the west under Railway Square.

The tunnel continues west from the vestibule under the tracks and platforms of the station, and opens onto Henry Deane Plaza, a depressed urban square opposite Railway Square filled with shops and restaurants.

[6] The tunnel extension begins at a portal at the opposite end of Henry Deane Plaza, continuing under Lee Street, Railway Square, and George Street, each of these points at which it can be accessed by stairs and escalators.

The tunnel extension then continues under the TAFE Marcus Clark Building and finally opens up at a portal behind the International Institute of Business and Information Technology at 841 George Street, connecting it to The Goods Line, providing an off-street connection between Central station and Darling Harbour.