Inauguration of Pope Leo XIV
On 18 May 2025, Pope Leo XIV celebrated the inauguration Mass of his pontificate, formally known as the "Mass for the Beginning of the Petrine Ministry of the Bishop of Rome". The event was attended by some 200,000 people, including dozens of world leaders and 150 formal delegations.
Source: Wikipedia — Inauguration of Pope Leo XIV (CC BY-SA 4.0)