In 1905, Warren moved with his family to the eastern shore of Maryland. There he purchased 300 acres of forestland where 10 years later, he began building a home patterned after a Spanish villa. The twenty-three room house, which Warren named "The Forest," was constructed of frame overlaid with concrete stucco to resemble the forest surroundings. Its interior contains a two-story inner courtyard where the artist painted many of his works. The fireplace in the front sitting room is large enough to accommodate 12- to 14-foot logs, and the ceiling of the back sitting rooms has 75 recessed light fixtures to illuminate the rooms.