Hello @lavater
Yeah, I have seen the Liberland project by Roger Van and it's one of the blockchain projects relating to real estate and people's freedom that I pay close attention to.
But Xaurum Gamma created a smart city in Croatia? This is my first time hearing about the project. I will search it out and see some lessons I can gather from the project.
Thanks for your great contribution to my post, I will make sure I keep you updated as we progress forward.
There is also a project in Cyprus with ICO soon which aims to build a huge crypto smart city (mainly for tourism) though it looks dodgy and a massive speculation: