This document provides an overview of a future city project for a class. It discusses the requirements of the project, which is to propose a new layout for an existing city ("X" city) that is no longer livable. The proposed future city can be underground, underwater, floating, or air-based. Data on ancient, present and future cities was collected. The document then summarizes investigations into the ancient underwater city of Thonis-Heracleion and the ancient city of Babylon, focusing on elements that could be incorporated into the future city design. Details on modern cities of Singapore and Chicago are also provided, specifically their water supply systems, as elements for the future city proposal.