Children aged 6 to 10 can build scale models using Kapla boards to explore how vaults hold their shape, while children aged 8 to 12 will have the chance to construct a real wooden arch or vault under guidance.
The workshop is led by Sandrine and Marion, who introduce participants to the principles of construction and heritage trades in a playful, hands-on way.
The event takes place at the Hôtel de Grave as part of the European Heritage Days 2026.