Celebrate Father’s Day by taking dad out for some family fun at LEGOLAND Discovery Center Dallas/Fort Worth, the ultimate indoor LEGO playground. Dads will be treated to free admission with the purchase of a full-price child ticket on Father's Day, Sunday, June 18. Enjoy the venue’s numerous attractions, including the newly opened LEGO Ninjago City Adventure and LEGO Friends Heartlake City. Dads and kids can join the Master Model Builder from noon to 4 p.m. to build their own LEGO race car then race them down the test track for a chance to win prizes for the fastest and most creative. Offer only available at the door on June 18, not available for purchase online.