The earliest historical site located within Gardner is the Two Cell Jailhouse. Built in 1906 and was in operation until the late 1950s. The white brick structure is probably the most "advertised" attraction in Gardner but the most forgotten thanks to the Riviera roadhouse and streetcar. As you enter the downtown, signs will point you in its direction.
It has been restored by the community and holds a strong presence near Gardner's downtown area.
Vistitors are now encouraged to "go behind bars" and have their own photo taken.
The Christian Christiansen Memorial is alos located on the property. Christiansen was a Norwegian man who was pivotial in preventing the Nazis in WWII from obtaining atomic weapons. The King of Norway even issued a letter praising his accomplishments.