Just finished Ben Highmore's wonderful book Playgrounds: The Experimental Years.
It's all about the ambitions of 20th century junk/adventure playgrounds that gave children the freedom to build, explore, experiment, and role play – and in so doing, inoculate them against fascism. https://reaktionbooks.co.uk/work/playgrounds
Here's Carl Theodor Sørensen writing in 1935 about a junk playground – very different from the orthodox playgrounds with fixed slides and swings.
Sørensen notes that playgrounds dedicated to constructive play "would look terrible" – a challenge that gravely hampered their prospects later on...
Sørensen built his playground in Emdrup, on the outskirts of Copenhagen, in 1943. Danish parents wanted a space where kids could play without Nazis occupiers suspecting they were saboteurs.
He later wrote, "of all the things I have helped realise, the junk playground is the ugliest: yet for me it is the best and most beautiful of my works."
Junk playgrounds had playworkers. John Bertelsen was the first in the Emdrup playground, and understood the assignment "to avoid serious intrusion into their fantasy world".
@adrianhon This is fascinating.
@mhoye thank you!