The City of London state barge passing up the Thames by Windsor Castle
View of the state barge of the City of London on the Thames at Windsor Castle. The small area of central London known as the City was regulated and represented by the Lord Mayor and Corporation of London. This is probably the Lord Mayor's barge, being larger than the 12-oar barges owned by many of London's Livery companies. The Lord Mayor's barge was traditionally covered with a blue canopy for civic occasions and red for royal occasions. As road transport was so poor, the quickest way to travel from the City to Windsor was by river.