The Pennsylvania Liberty Bell is located in the basement of the Zion Reformed Church in Allentown, Pennyslvania. The Liberty Bell was hidden in this location in 1777 when the British invaded Philadelphia during the American Revolution.
The Liberty Bell Shrine, also located inside Zion Reformed Church, houses an excellent exhibit of Liberty Bell memorabilia as well as lots of information about the Liberty Bell's move to Allentown in 1777.