The Old Wan Chai Post Office is the oldest surviving post office building in Hong Kong. This L-shaped building situated at the junction of Wan Chai Gap Road and Queen's Road East, was erected between 1912 and 1913, and opened on 1 March 1915 as the Wan Chai Post Office. It is a simple pitched-roof structure with attractive gable ends and mouldings. The building is now operated by the Environmental Protection Department as a resource centre.