The Venus Project
Society, Future, Projects - The Venus Project. Plan to redesign global society using high technology directed by an ethic of sustainability: essays, model project in Florida, photo-realistic graphics of proposed future cities and technologies.
https://www.thevenusproject.com/
Freedom Ship - the City at Sea
Society, Future, Projects - Freedom Ship - City At Sea. A project to build a floating city which will continually circle the globe.
http://freedomship.com/