How long does the LEGO Factory Tour last? The LEGO Factory Tour is self guided and each guest can spend as long, or little, as they like in the Factory area. Related articles What is the LEGO Factory tour? Do I have to do the LEGO Factory Tour? Do you offer any other educational packages? Why do I need to book a time slot with my combination ticket? What can you do at LEGOLAND Discovery Center Dallas Fort Worth?