The document summarizes information about three cities - ancient, present, and future. For the ancient city of Pompeii, it describes the city's founding in the 7th century BC, population of 11,000, villas in the surrounding area, and infrastructure including aqueducts and drainage systems. For the present city of Marseille, it provides details on the city's population, economy centered around trade and industry, and transportation infrastructure. For the future city of New York City, it outlines the city's location and borough structure, status as a leading financial center, and diverse demographics.