The Pennsylvania Farm Show , the largest free indoor agriculture exposition in the United States , was first held in Harrisburg in 1917 and has been held there every early-to-mid January since then . Harrisburg also hosts an annual outdoor sports show , the largest of its kind in North America , an auto show , which features a large static display of new as well as classic cars and is renowned nationwide , and Motorama , a two-day event consisting of a car show , motocross racing , remote control car racing , and more . Harrisburg is also known for the Three Mile Island accident , which occurred on March 28 , 1979 , near Middletown
Three Mile Island accident
Three Mile Island accident
Harrisburg, Pennsylvania