“German Village” at Dugville Proving Grounds, Utah.
This along with a “Japanese Village” was built and used to test the effects of the M69 bomb, the forerunner of Napalm during the Second World War.
It was constructed down to the last detail, even going as far as dousing the buildings with water as Germany is a more humid climate.
Read more here:
GERMAN VILLAGE
https://en.m.wikipedia.org/wiki/German_Village_(Dugway_proving_ground)