The Tower of Pisa is one of the most beautiful bell towers in Italy. It is not only beautiful, but also strange-- it leans to one side.Today it is known as “the Leaning Tower of Pisa.” 比萨斜塔是意大利一个最美丽的钟楼。 它不仅美丽,而且怪--就是向一边倒。 今天,它被称为"比萨斜塔"。 The building of the tower began in 1173.It took nearly 200 years to complete . In 1178,when the building got to the third floor,It started to lean. The builders tried to make the tower straight again when they built the upper floors, but failed. 塔的建设始于 1173 年。前后花了近 200 年才完成。在 1178 年,当建到了三楼时,它就开始倾斜了。建设者在建造上面的楼层时,试图使塔纠正回来,但是失败了。 Over the years, the tower has continued to lean further . Experts have done a lot of studies and tried to “rescue” the tower. In 1990 ,it was closed to the public for safety reasons. After a lot of effort, it reopened in 2001. Hopefully it will be safe for at least the next 300 years.