German "Ort" meaning "place". Would you know where the German word Ort comes from?

I did not, but I took a look at Kluge and Grimm's dictionary. In Middle High German, ort meant 'point (of a weapon)'. It developed a secondary meaning of 'corner; angle', and from that developed the meaning of 'place' in modern German. It had the point of a weapon meaning in Old Saxon (Dutch) and old English ord. (This latter is not related to ordnance (var., ordinance) which is ultimately from Latin, via French, ordo 'order'.

Ceci n'est pas un seing.