Heaviest LEGO Architecture sets
Tower Bridge (21067, 2026) is the heaviest Architecture set at 3.9 kg (8.5 lb), ahead of Notre-Dame de Paris and Neuschwanstein Castle. 64 Architecture sets have a boxed weight; this list updates when a new set enters the top 25.
Boxed weight, BrickLink and Brickset data · Updated 24 Oct 2026
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