Compléter About London 1Version en ligne Fill in the gaps par maría luisa pérez dorribo 1 pedestrians tourists one Tower River travelling cathedrals galleries bridge taxi palaces waterbus trains Tower churches Bridge City art museums Square bus cars London is on the Thames . In about 43 AD the Romans built the first over the river . That was the beginning of the of London . Until 1747 there was only bridge over the Thames . Now there are twenty - nine , some for , some for and some for . Some are very famous , like . London is a big city but around is easy . You can take a , a red or a black . Over twenty million come to London every year . There is so much to see in London : , , , Trafalgar , the and lots of and .