From 24 Nov 24 November 2018. Go To Event Website . LEGO Towers of Tomorrow exhibition at Science World. HispaLUG Expo 2018 HispaLUG Expo 2018. Until 25 Nov 25 November 2018. Avinguda d'Enric Prat de la Riba, 77, Granollers, Barcelona, 08401, Spain Sign in to follow this . The exhibition’s representation of the CN Tower stands at a height of 2.77 metres with 15,211 bricks, and took 83 hours to build. To start a new subscription or to add digital access to your print subscription, click Sign Up to join Subscriber Plus.. (Kenneth Chan / Daily Hive) LEGO Towers of Tomorrow exhibition at Science World. If you’re already a digital subscriber, Log In. Event posted by Yago Díaz.