The Seasteading Institute is positive that someday in the future, we'll have to migrate away from land and into renewable-energy powered floating cities. So sure, in fact, that they ran a competition for seastead designs for permanent, stationary structures that would allow for long-term ocean living. From the off-shore floating research laboratory shown above to a Jetsons-esque enclosure, WebUrbanist has a detailed round-up of the five winning entries.  Link

Image credit: Team 3DA