There also happend the "Long Night of Startups" in Berlin yesterday. Not much about LoRaWAN.
But i met a guy from Poznań/Poland, nearby Berlin, whom i told about TTN. He was interested. Maybe, he will contribute to the network in his city of residence.
Picture is showing Deutsche Telekom, Berlin-Headquarter, manipulated by PRSIMA (not operated by this PRISM thing - operated by NSA... :) )