Cycles in Urban Environment This book explores the appearance and impact of cycles in urban surroundings and, in a second stage, their potential for an urban proposition. Cycles appear in any part of life. Examples can be found in time, economics, environment or social activities. Cycles appear through a wide range of scales and often without referring to them. Investigating these patterns in a spatio-social context makes sense regarding urban planning and urban sustainability as well as from a theoretical point of view in the sense of a spatial-temporal concept. The first part, is designed as an observational study in an existing urban environemnt, where as the second part, is an application of some of the findings of part one in a proposal for a floating city in the Thames Estuary. Both elements are approached as one process and influence one another. Four included essays with a specific focus on a related topics help to set a wider context and guide the debate.