The custom built train is comprised of 500,000 LEGO bricks and features three carriages: the engine and driver’s cabin, a carriage full of presents and a final carriage delivering a Christmas tree.
The structure launched on 29 November, and will be in place at Liverpool One until 29 December. Guests can enjoy the Lego train for free, and are encouraged to share their pictures on social media using the hashtag #LetsBuildXmas.
Miles Dunnett, director at Grosvenor Europe, said: "Grosvenor Europe is focused on offering something new and innovative for our visitors and we are therefore always looking at unique installations such as this. The interactive LEGO Santa Express will be a big attraction for people of all ages over the festive period, and is part of a much wider calendar of events and activities at Liverpool ONE."
The festive Lego train coincides with the launch of the Christmas Tree Fairy augmented reality app and introduction of a new consumer marketing campaign for Liverpool ONE, which is running regionally throughout the Christmas period.
In October, at Liverpool One. Last month, in London's Leicester Square.
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