LighthouseA lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems.
District lineThe District line is a London Underground line running from in the east and Edgware Road in the west to in west London, where it splits into multiple branches. One branch runs to in south-west London and a short branch, with a limited service, only runs for one stop to . The main route continues west from Earl's Court to after which it divides again into two western branches, to Richmond and . Printed in green on the Tube map, the line serves 60 stations (more than any other Underground line) over .
DeptfordDeptford is an area on the south bank of the River Thames in southeast London, within the London Borough of Lewisham. It is named after a ford of the River Ravensbourne. From the mid 16th century to the late 19th it was home to Deptford Dockyard, the first of the Royal Dockyards. This was a major shipbuilding dock and attracted Peter the Great to come and study shipbuilding.
Brackish waterBrackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root brak. Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming.
London BridgeSeveral bridges named London Bridge have spanned the River Thames between the City of London and Southwark, in central London. It is the oldest road-crossing location on the river. The current crossing, which opened to traffic in 1973, is a box girder bridge built from concrete and steel. It replaced a 19th-century stone-arched bridge, which in turn superseded a 600-year-old stone-built medieval structure.
DartfordDartford is the principal town in the Borough of Dartford, Kent, England. It is located south-east of Central London and is situated adjacent to the London Borough of Bexley to its west. To its north, across the Thames estuary, is Thurrock in Essex, which can be reached via the Dartford Crossing. To its east lies the Borough of Gravesham and to the south the district of Sevenoaks. The town centre lies in a valley through which the River Darent flows and where the old road from London to Dover crossed: hence the name, which derives from Darent + ford.
CrossrailCrossrail is a railway construction project centred around London. Its aim is to provide a high-frequency hybrid commuter rail and rapid transit system crossing the capital from suburbs on the west to east, by connecting two major railway lines terminating in London: the Great Western Main Line and the Great Eastern Main Line. The project was approved in 2007, and construction began in 2009 on the central section and connections to existing lines that became part of the route, which has been branded the Elizabeth line in honour of Queen Elizabeth II who opened the line on 17 May 2022 during her Platinum Jubilee.
Port of LondonThe Port of London is that part of the River Thames in England lying between Teddington Lock and the defined boundary (since 1968, a line drawn from Foulness Point in Essex via Gunfleet Old Lighthouse to Warden Point in Kent) with the North Sea and including any associated docks. Once the largest port in the world, it was the United Kingdom's largest port as of 2020. Usage is largely governed by the Port of London Authority ("PLA"), a public trust established in 1908; while mainly responsible for coordination and enforcement of activities it also has some minor operations of its own.
Thames WaterThames Water Utilities Ltd, known as Thames Water, is a large private utility company responsible for the water supply and waste water treatment in most of Greater London, Luton, the Thames Valley, Surrey, Gloucestershire, north Wiltshire, far west Kent, and some other parts of England; it has a considerable local monopoly. With origins dating back to the formation of the New River Company in 1609, Thames Water was established in 1989 during privatisation of the water industry in England and Wales.
County of LondonThe County of London was a county of England from 1889 to 1965, corresponding to the area known today as Inner London. It was created as part of the general introduction of elected county government in England, by way of the Local Government Act 1888. The Act created an administrative County of London, which included within its territory the City of London. However, the City of London and the County of London formed separate ceremonial counties for "non-administrative" purposes.
