The North Mole is a breakwater located in the northern section of Gibraltar Harbour, in the British Overseas Territory of Gibraltar, at the southern end of the Iberian Peninsula. The North Mole, with the rest of harbour, is just north of the east entrance to the Strait of Gibraltar. The breakwater was formerly known as the Commercial Mole, and is the site of the commercial port in the harbour. It was the consequence of a late nineteenth century plan by the British Admiralty to create a modern dockyard and large defensive harbour in Gibraltar.