The 950-year-old Bayeux Tapestry will be moved to London next month for a nine-month exhibition at the British Museum, marking only the third time it has left its home in Bayeux.
French officials say the 70-meter embroidery will be placed in a double crate with shock absorbers to protect it during the 348-mile journey, which includes road travel and the Channel Tunnel rail shuttle.
Two dry runs with facsimiles have reduced vibration concerns, with experts reporting 96% shock absorption.
The tapestry, created after William the Conqueror's victory in 1066, depicts the Norman conquest of England.
The loan was announced by President Macron in 2025 to strengthen Franco-British ties. In return, the UK is sending artifacts including the Lewis chess set and Sutton Hoo treasures to Normandy.