From Chautauqua website:
The Colorado Chautauqua is located in southwest Boulder, at the foot of Green Mountain. Chautauqua’s grounds, cottages and public buildings comprise the Chautauqua Park Historic District, an area of 40 acres bordered on 3 sides by City of Boulder Open Space and Mountain Parks land. The historic district has a spectacular national setting at the base of the Flatirons, some of the dramatic massive uplifts along the foothills of the Rocky Mountains. The district contains the Auditorium, the Dining Hall, the Community House, Missions House Lodge, Columbine Lodge, the Academic Hall, more than 100 cottages and landscaped parks.