Fallenleaf is an artful modern addition to a 19th-century home in Holland, Michigan’s Waukazoo Woods. Designed for an older couple, the project emphasizes aging in place and connection to the landscape. The addition snakes around several old-growth trees, and combines solid facades for privacy and glazed walls to frame forest views. A subtle glass volume acts as an extension of the dining room while gently bridging the historic home with the added contemporary primary suite and library. The addition’s three volumes are unified by a distinctive flat roof with deep overhangs that frame indoor-outdoor environments and form a courtyard garden.