dr. fox gardner, who came up with the concept, designed these for natural airflow. air flows from the bottom up to the top to maximize the amount of fresh air. one patient assigned to each of these huts. there may be colonies of hundreds of these at each of the sanatoriums. they are designed to isolate patients, to help them understand the communicable nature of the disease and to teach them about sanitary conditions and health care practices so that when they go back to their homes, to their jobs and families, they can help to spread that information instead of the disease. the sanatorium era lasted from the late 1880's until after world war ii. during world war ii, streptomycin was discovered to tuberculosis and treated chemically as opposed to fresh air and food. by the end of world war ii, this part of our history was coming to an end. what had been a major industry in the community was going away. what we did to recover from that was attracted the military and today, colorado springs is affiliated with military, five major installations here in colorado springs