When I was updating the forum about recent changes in Parisian churches, I mentioned that
Saint-Denys du St-Sacrement.
https://www.saintdenys.net/visiter-l-eglise
had a new chapel devoted to the first millennial generation saint, Carlo Acutis
Carlo's canonization had been scheduled for April 27th of this year but when Pope Francis died on the 21st, it was postponed. On Friday the 13th Pope Leo XIV announced that it has now been rescheduled for September 7th.
His main shrine is in Assisi. Archbishop Domenico Sorrentino has said that more pilgrims come to Assisi to visit Acutis’ tomb than St. Francis’.
Carlos is also popular in Milan, where he attended mass every day, and in Paris, as seen in the church linked above.