<h3> The tour in America only have a week left . Today and tomorrow, we stay in Washington. We will go NASA campsite . </h3><h3> By the way we go to Philadelphia ，and visit the famous , the sign of freedom ——Liberty Bell . This Bell sometimes called the liberty bell, it was tolled on July 4, 1776, declaring the United States independent, and was damaged in 1835. The liberty bell is a symbol of Philadelphia, and of the American spirit of freedom, and of American pride.</h3> <h3>Now the office of Mexican President and finance ministry, also known as the governor-general's house, is now the national palace, there are 14 gardens inside the palace, in the door balcony hanging a big bell, in the independence movement on September 16, 1810 when the bell, called the people rise to fight for national liberation, hence named "independence bell."</h3> <h3>The liberty bell can no longer be repaired. Apart from the annual independence day, church bells across the United States are ringing.</h3><h3>But that fissure seemed to be the broken arm of the Venus DE milo. The American treasure of the liberty bell is hard for us to imagine.</h3> <h3>It took part in the most important event in early American history, the liberty bell is only 250 years old, weighs just over 900 kilograms, and is made from a mixture of metals. It was ordered from the United Kingdom in 1751 by the Pennsylvania state council at a price of 100 pounds. The workmanship was obviously limited that year. A year later two local foundry cast again, finally successful. When Washington's birthday was celebrated in 1835, several children cracked a foot-long crack. Ten years later it was knocked for hours at the same event, and the result was the famous jagged crack we see now, which is not the only one.</h3>