Complex sentence: Other notable conferences were founded at such places as Chautauqua, NY, Winona Lake, IN, and Northfield, MA, grew in popularity as places of physical rest, entertainment, and spiritual renewal.
Split into simpler sentences: Other notable conferences were founded at such places as Chautauqua, NY, Winona Lake, IN, and Northfield, MA. These conferences grew in popularity as places of physical rest, entertainment, and spiritual renewal.