located_in_the_administrative_territorial_entity heathrow terminal 5 station
___MASK61___ Circus is a road junction and public space ___MASK75___ London ' s West End in the City ___MASK75___ ___MASK77___ , built in 1819 to connect Regent Street with ___MASK61___ . In this context , a circus , from the Latin word meaning " circle ", is a round open space at a street junction . The ___MASK84___ Underground ( also known simply as the Underground , or by its nickname the Tube ) is a public rapid transit system serving ___MASK17___ and some parts ___MASK75___ the adjacent counties ___MASK75___ Buckinghamshire , Essex and Hertfordshire in the United Kingdom . The ___MASK20___ line is a London Underground service that crosses Greater London from east to west . From Upminster , the eastern terminus , the line runs through Central London to Earl ' s Court before dividing into three western branches , to Ealing Broadway , ___MASK42___ and Richmond . There is a short branch that ___MASK55___ from Earl ' s Court to . A branch also runs north from Earl ' s Court to Edgware Road via Paddington . Coloured green on the tube map , the line serves 60 stations in , and with bridges across the Thames on the ___MASK42___ and Richmond branches is the only London Underground line to cross the river in this way . The track and stations between Barking and Aldgate East are shared with the Hammersmith & City line , and between Tower Hill and Gloucester Road and on the Edgware Road branch with the Circle line . Some ___MASK75___ the stations are shared with the Piccadilly line . Unlike London ' s deep - level tube railways , the railway tunnels are just below the surface , and the trains are ___MASK75___ a similar size to those on British main lines . ___MASK52___ ( often abbreviated Herts ) is a county in southern England , bordered by Bedfordshire to the north , Cambridgeshire to the north - east , Essex to the east , Buckinghamshire to the west and Greater London to the south . For government statistical purposes , it is placed in the East ___MASK75___ England region . An airport rail link is a service providing passenger rail transport from an airport to a nearby city ; by mainline - or commuter trains , rapid transit , people mover or light rail . Direct links operate straight to the airport terminal , while other systems require an intermediate use ___MASK75___ people mover or shuttle bus . The Tube map is a schematic transport map ___MASK75___ the lines , stations and services ___MASK75___ London ' s public transport systems , the primary system being London Underground , known colloquially as " the Tube ", hence the map ' s name . The first schematic Tube map was designed by Harry Beck in 1931 , and it has since been expanded to also include today the Docklands Light Railway , London Overground , TfL Rail , Tramlink and the Emirates Air Line cable car . Covent Garden ( or ) is a ___MASK20___ in London on the eastern fringes ___MASK75___ the West End , between St Martin ' s Lane and Drury Lane . It is associated with the former fruit - and - vegetable market in the central square , now a popular shopping and tourist site , and with the Royal Opera House , which is also known as " Covent Garden ". The ___MASK20___ is divided by the main thoroughfare ___MASK75___ Long ___MASK95___ , north ___MASK75___ which is given over to independent shops centred on Neal ' s Yard and Seven Dials , while the south contains the central square with its street performers and most ___MASK75___ the elegant buildings , theatres and entertainment facilities , including the London Transport Museum and the Theatre Royal , Drury Lane . ___MASK2___ Square is a pedestrianised square in the West End ___MASK75___ London , England . It was laid out in 1670 and is named after the contemporary ___MASK2___ House , itself named after Robert Sidney , 2nd Earl ___MASK75___ ___MASK2___ . Heathrow Terminal 5 station is a shared railway station at ___MASK84___ Heathrow Airport Terminal 5 which was opened on 27 March 2008 . It was designed by architects HOK International in conjunction with Rogers , Stirk , Harbour & Partners . The station is staffed by Heathrow Express staff unlike the underground stations at Heathrow Terminal 4 and Heathrow Terminals 1 , 2 , 3 . The ___MASK84___ Underground section ___MASK75___ the station is situated in Travelcard Zone 6 . It is the westernmost below - ground station on the ___MASK84___ Underground network . Until 2012 , free transfer was not possible between terminals via the Underground , in contrast to the Heathrow Express . In January 2012 , free travel was introduced for Oyster card holders between the Heathrow stations on the Piccadilly line . Journeys from Heathrow Terminal 5 to Terminal 4 via the Piccadilly line require a change at Hatton Cross ; this journey is free , despite Hatton Cross not being part ___MASK75___ the free travel zone . Although situated underground , parts ___MASK75___ the station ' s roofing are made ___MASK75___ translucent ETFE laminate panels , allowing natural daylight to flood down both ends ___MASK75___ all six platforms . ___MASK70___ ( or ), abbreviated Bucks , is a county in ___MASK57___ which borders Greater London to the south east , Berkshire to the south , ___MASK91___ to the west , Northamptonshire to the north , Bedfordshire to the north east and ___MASK52___ to the east . ___MASK59___ Palace is the ___MASK84___ residence and administrative headquarters ___MASK75___ the reigning monarch ___MASK75___ the United Kingdom . Located in the City ___MASK75___ ___MASK77___ , the palace is often at the centre ___MASK75___ state occasions and royal hospitality . It has been a focal point for the British people at times ___MASK75___ national rejoicing and mourning . The ___MASK61___ line is a line ___MASK75___ the London Underground , coloured dark blue on the Tube map . It is the fourth busiest line on the Underground network on the basis ___MASK75___ the number ___MASK75___ passengers transported per year with 210 , 000 , 000 . It is mainly a deep - level line , running from the north to the west ___MASK75___ London via Zone 1 , with a number ___MASK75___ surface sections , mostly in its westernmost parts . It is named after the road above it between Hyde Park Corner and ___MASK61___ Circus . Some ___MASK75___ its stations are shared with the District line and some are shared with the Metropolitan line . It is the second longest line on the system , after the Central line , and has the second most stations , after the District line . It serves many ___MASK75___ London ' s top tourist attractions including Harrods ( Knightsbridge ), Hyde Park , Buckingham Palace ( within walking distance from Green Park ), ___MASK61___ Circus , Leicester Square and Covent Garden , as well as London Heathrow Airport , the busiest airport in Europe . The line shares tracks with the Metropolitan line between Uxbridge and Rayners Lane , and with the District line between Hanger Lane Junction and Acton Town , then runs parallel with the District line between Acton Town and Barons Court . Rapid transit , also known as heavy rail , metro , subway , tube , or underground , is a type ___MASK75___ high - capacity public transport generally found in urban areas . Unlike buses or trams , rapid transit systems are electric railways that operate on an exclusive right - ___MASK75___ - way , which cannot be accessed by pedestrians or other vehicles ___MASK75___ any sort , and which is often grade separated in tunnels or on elevated railways . Heathrow Airport Holdings Limited , formerly BAA is the ___MASK89___ - based operator ___MASK75___ London Heathrow Airport . The company also operated London Gatwick and Stansted airports , plus several other UK airports under its former name . It was formed by the privatisation ___MASK75___ the British Airports Authority as BAA plc as part ___MASK75___ Margaret Thatcher ' s moves to privatise governement - owned assets , and was once a constituent ___MASK75___ the FTSE 100 Index . Heathrow Express is an airport rail link between ___MASK84___ Heathrow Airport and Paddington . It opened in 1998 and is operated by the Heathrow Express Operating Company , a wholly owned subsidiary ___MASK75___ Heathrow Airport Holdings . It is an open access operator and not subject to franchising . Harrods is a luxury department store located on ___MASK36___ ___MASK24___ in Knightsbridge , London . It is owned by the state ___MASK75___ Qatar . The Harrods brand also applies to other enterprises undertaken by the Harrods group ___MASK75___ companies including Harrods Bank , Harrods Estates , Harrods Aviation and Air Harrods , and to Harrods Buenos Aires , sold by Harrods in 1922 and closed , with plans announced to reopen in 2013 . Heathrow Airport is a major international airport in ___MASK84___ , ___MASK60___ . Heathrow is the third busiest airport in the world by international passenger traffic ( surpassed by ___MASK56___ International in 2014 , and Hong Kong International in 2016 ), as well as the busiest airport in Europe by passenger traffic , and the sixth busiest airport in the world by total passenger traffic . In 2016 , it handled a record 75 . 7 million passengers , a 1 . 0 % increase from 2015 . The Metropolitan line is a ___MASK84___ Underground line that runs from Aldgate , in the City ___MASK75___ ___MASK84___ , to Amersham and Chesham in Buckinghamshire , with branches to Watford in Hertfordshire , and Uxbridge in the ___MASK82___ . Coloured magenta ( Pantone 235 ) on the tube map , the line is in length and serves 34 stations . The section between Aldgate and Baker Street is shared with the Circle and Hammersmith & City lines ; that between Rayners Lane and Uxbridge with the Piccadilly line ; and that between Harrow - on - the - Hill and Amersham with Chiltern Railways . Just under 67 million passenger journeys were made on the line in 2011 / 12 . The line is one ___MASK75___ only two ___MASK84___ Underground lines to cross the Greater ___MASK84___ boundary , the other being the Central line .