Abstract
Those flying into Chicago from the east on a sunny day encounter a stunning vista. The first thing they see is a long strip of parkland, rising from the blue waters of Lake Michigan and running almost the entire length of the city from south to north. Immediately behind the parkland, a wall of glass and steel buildings thrusts upward, dramatically reflecting the greenery below. Perhaps most striking to the well-traveled eye, the line dividing the lake from the shore is remarkably free of unsightly vestiges of a rougher, more industrial past, such as rotting docks, abandoned factories and warehouses,