The Philadelphia Freedom Bell is a historical monument in the National Independence Historical Park in Philadelphia, the symbol of American independence, and is second only to the Statue of Liberty in the United States. The Freedom Bell, which has a history of more than 250 years and weighs only 900 kilograms, was cast by a mixture of metals. Ordered from the UK by Pennsylvania State Council in 1751 for £100, the craft level was obviously limited that year, and the bell was shipped to Philadelphia the next year, and broke when it was tried.