The document discusses future city representations and case studies. It summarizes an investigation of ancient cities like Chan Chan, Peru, which had an advanced water system of canals and aqueducts. It also discusses present cities like Copenhagen, noting its green technologies and cycling culture, and Melbourne for its livability. For future cities, it examines the Shimizu Mega-City Pyramid concept with its efficient transport system using nodes. It provides details on the Floating City Project, highlighting its objectives of movability, dynamic geography, growth, seakeeping, safety, and a water experience.