Tunnels underneath the River Thames constructed up to 1999 for the Millennium Dome; and a tunnel to the site of the old Ferranti power station on the east side of the mouth of Deptford Creek. There is also a tunnel between Cottons centre and the old Billingsgate Fish Market near to London Bridge. Citibank used it for cabling at one point; it was large enough for a person to walk through. The Silvertown Tunnel is a new Thames river crossing proposed to supplement the existing Blackwall Tunnel, which will join the Greenwich Peninsula with West Silvertown. There is also a further tunnel about two miles
Queen Elizabeth II Quay simply "the harbor" and is Freetown's more centrally located harbor. Queen Elizabeth II Quay has sometimes been the called the "third largest natural harbor in the world"— this is inaccurate in two respects: 1.) the QE II Quay is not itself a natural harbor but a man-made port or "quay", and 2.) the quay is a very small feature of the river estuary on which it was built— it is this estuary which has carved out what is the largest natural harbor on the African continent. This still puts this harbor behind Port Jackson in Sydney, Australia, and several natural