From Catholic News Agency:
Pope Leo XIV on the afternoon of Wednesday, Aug. 13, returned to Castel Gandolfo, where he had resided during his summer vacation in July. The Pontiff left the Vatican around 4:30 p.m. local time and traveled by car to the papal summer home where he stayed July 6–22.
Castel Gandolfo, located 15 miles from Rome on the shores of Lake Albano, has historically been the site of the papal residence during the summer. While Pope Francis decided to stay at the Vatican during the summer, Pope Leo XIV has revived the tradition.