A chunky concrete box fronted by an elegant wood-louvered addition, the Umeda Hospital brackets the extremes of Kengo Kuma’s architecture. While concrete and glass once characterized the Tokyo-based designer’s work, today wood, bamboo, and other natural materials are his signature. Separated by 17 years and exemplifying different modes of architectural expression, the base building and its new addition house a 34-bed maternity hospital plus an outpatient pediatrics clinic. Departing from the sterile coldness of generic health-care centers, the warmth of the reborn hospital welcomes patients both big and little.