Underground? No way!

Yesterday we went to London! Well, I can't say that I had a good day because I was lost! We used the underground to go to the London Eye (at Waterloo). It was really easy to get there, but when we needed to get back, we got lost. We thought that the train would go to Oxford Circus but it didn't, it went to the Elephand&Castle. We wanted to use taxi, but we couldn't find one, or at least we didn't notice any so we used the underground again to go to Marble Arch. It was really complicated, but I was so glad that we find our way. I actually learnt too much about the underground in London and I was really upset that I couldn't do anything else, like shopping or seeing the Tower of London. Because I wasted my time in the underground, I couldn't take any photos of London, just the London Eye and that was it. Time was very short and I was really disappointed...