Covers changes in prison system since its 1848 inception. Visitors see old ball-and-chains, replica of 9 x 6 cell, and "Old Sparky," the state's electric chair used between 1924 and 1964. Rotating exhibits. Along with other penal artifacts, visitors also see crafts and products produced by in-mates. Special weekday group tours and group rates available by appointment. Located at 491 Texas. 75 N., (take Exit 118 from I-45). Admission fee.