Hitler knew the floorplan of the opera house from memory and gave the group a tour, pointing out the architectural elements and layout.

The Moschino creative director displays selections from his 4000-piece collection of post-1980s Japanese and French fashion in the Paris apartment he shares with his partner, Ryan Benacer.

For Benichou, founder of Paris’s Batiik Studio, the apartment was a welcome challenge. Working alongside her creative director, Florence Jallet, it was the interior architecture studio’s first ...