The LEGO Harry Potter Triwizard Tournament: The Black Lake Building Set 76420 is a new LEGO set that features Harry Potter, Viktor Krum, Ron Weasley, and Hermione Granger. It is designed for children aged 8 years and up who are interested in building and collecting. The set includes a collectible building of the Black Lake and measures 10.31 x 11.10 x 2.32 inches when assembled. It is made of plastic and weighs 1.254 lb. This LEGO set is part of the LEGO Harry Potter TM theme and subtheme Building.