It was a wonderful day in London. Everything excited me so much that I think I can never forget them. We visited the old Greenwich School and Greenwich Park before going on the river Thames. We took photos at Greenwich observatory. But it was because of the very limited time that we were put in a tight corner. In order to catch the boat we had to run and run, including Mark and his family. We reached the pier just the time.英国伦敦格林威治遗产中心