The Arc de Triomphe was ordered by Napoleon to honour his armies after Austerlitz, yet he never saw it finished — he died fifteen years before it opened. Only in 1840 did his coffin pass beneath the completed arch, carried back to Paris nineteen years after his death. Jean Chalgrin drew it after Roman triumphal gates but built it far larger, a single vault fifty metres high at the western end of the Champs-Élysées. The inner walls are dense with carved names of victories, generals and campaigns, set there as a record of the era.
The arch stands at the centre of a roundabout where twelve avenues meet, with traffic circling it all day. Up close, one pillar carries a huge carved panel called La Marseillaise, the work of the sculptor François Rude: a winged figure above a crowd of volunteers, driving them off to war. Beneath the vault lies the Tomb of the Unknown Soldier from the First World War, its flame rekindled every evening at dusk. Climb the spiral stair to the roof and the twelve avenues run out below you in every direction, the axis going straight to the Louvre one way and the towers of La Défense the other.