fourth wall or study hall

Messy Nessy Chic, in anticipation of finer weather, laments how classrooms out of doors have been, in the main, unfortunately relegated to the distant past.
While we still do have Waldschulen (though I’m given to understand now it’s more like a weekly field-trip, weather-permitting, than a regular occurrence), which started the tradition back in 1904 under the auspices of better ventilation and fresh air made young people more hale and hearty, but after the late 1950s, the popularity of al fresco education has waned considerable. The idea once, however, held almost universal esteem in Europe, with the founding in 1922 of the League for Open Air Education at the International Congress in Paris, mandating schools to adopt floorplans that included pavilions and breeze-ways and even retractable roofs. This gallery of classrooms without walls does make one reminisce for the educational experience that we never had, especially whiling away the hours confined to the office, with only a tantalising glimpse outside.