#31: Open-Air Classroom, 1957, the Netherlands

In the early 20th century, tuberculosis was one of the deadliest diseases in the world, especially in crowded urban areas. In response, educators and public health officials sought innovative solutions to prevent its spread. Open-air schools, with their emphasis on fresh air and natural light, were one such solution.

The Netherlands was at the forefront of this movement, with over 50 open-air schools in operation by the 1950s. These schools were often located in idyllic rural settings, allowing children to learn in nature and experience the benefits of outdoor activities. While they were initially successful in reducing tuberculosis rates, advancements in medicine and hygiene eventually rendered them obsolete…