There are plans to build a 6 km^2 island in the middle of the North Sea to act as a marshalling point for a whole new raft of wind turbines on the Doggerbank.
https://arstechnica.co.uk/science/2017/05/north-sea-wind-pow...
It would also be a routing point for powerlines out to the surrounding countries.
My question is which country's territory would it be?
A key question since this would bestow rights on the surrounding ocean. If this is planned to be a European territory then wouldn't that in itself be novel?