Visit the Toyota Motor Manufacturing Indiana for a look behind the scenes at how cars are made. The visitor’s center features educational exhibits and souvenirs for kids to take home. Plant tours are free and are scheduled frequently, but fill up fast. Children must be at least 6 years old to take the tour. The visitor center is open Monday through Friday from 9 a.m. to 3 p.m. and on Saturday, but hours vary. It is closed on Sunday.