LEGO Harry Potter 71043 Hogwarts Castle

The whole school in one box, and still on sale eight years after its 2018 launch. At 6,020 pieces and roughly 58 by 69 cm across, it is the most expensive set here and a commitment of shelf space as much as money. The catch for minifigure fans is scale: the castle is built at microscale, so most of its people are tiny figures rather than standard minifigures, and the rooms are glimpses rather than playable spaces. Choose it if you want every tower, the Whomping Willow and the Flying Ford Anglia in one finished silhouette; choose a modular castle instead if you want to look inside the rooms.