st helen's place, the gherkin, architecture
england, great britain, tower bridge
london, grenadier guards, sightseeing
st pauls cathedral, london, bridge
the underground, london, the city
passengers, station, subway
london, england, river
castle, london, sightseeing
underground, london, england
business, uk, london
tower bridge, bridge, london
london eye, london, clouds
london, bus, red
phone booth, england, london