泰晤士河蜿蜒流经古老的伦敦。河的东北岸边,静静地坐落着一大片中世纪建筑群,它由数座古堡、古塔楼错落有致地组成,这便是饱经岁月沧桑的伦敦塔了。历史上,伦敦塔曾经充当多种角色,包括要塞、军火库、铸币厂、天文台,甚至作为动物园,《坎特伯雷故事集》的作者乔叟当年就曾来到这里看过狮子。不幸的是,伦敦塔也曾作过监狱, The Thames meanders through ancient London. The northeast coast of the river, quietly nestled in a large medieval buildings, which consists of several ancient castle, the ancient towers of the patchwork of composition, which is full of years of vicissitudes of the Tower of London. Historically, the Tower of London used to play a variety of roles, including the fort, the arsenal, the mint, the observatory, and even as a zoo, the author of the Canterbury Tales, who had visited Lions there. Unfortunately, the Tower of London has also been a prison,