As a decorative arts historian and an international contributing editor for Architectural Digest, Gay Gassmann is a professional expatriate who splits her time between Paris, New York, Tokyo and beyond. She has hosted many of Indagare’s most popular Insider Journeys—to Marrakech, Lisbon, Istanbul and Beirut—and this spring, she is leading another journey in partnership with Architectural Digest to Tokyo, where she will open doors to leading galleries and creative studios. Here, the design inside...