Environmental aesthetics has become a matter of concern to many different groups in recent years--to conservationists, to legislators, reluctantly to industrialists, and indeed to the public at large. This interest seems to have a clear purpose. It is regarded as an effort, belated and desperate, to save the resources and beauties of our natural world from the possibility of complete and irrecoverable exploitation, and from the disfigurement and loss that must follow. It is an attempt to change the atmosphere from a toxic medium that is often impossible to escape back to one that is fresh and invigorating. It is a proposal to rebuild our cities before they become unredeemable wastelands of physical and social decay