Why the giant builds need more than studs
A LEGO brick stays put because its studs press into matching tubes on the brick above. That friction-fit connection is strong enough for ordinary play, but it is designed to come apart when someone pulls. A large public display faces a different problem: repeated handling can loosen bricks or let a curious visitor remove one.
Staff glue the bricks together so the model behaves more like a single sculpture than a pile of pieces. Adhesive bridges the joints that make the construction modular, making casual dismantling much harder.
The tradeoff behind a fixed model
Glue changes what the builders can do afterward. A loose brick can simply be taken off and replaced; a glued one may require more careful repair. The display gains resistance to hands-on interference, but gives up some of the easy rebuilding that makes LEGO useful in the first place.
That quiet change in the building method helps a giant model remain recognizable as visitors move around it: the familiar bricks are still visible, but the connections are no longer meant to invite a pull-apart.
