Chicago is generally known as one of the centers of modernist architecture, and this visual guidebook, complete with maps, photographs and authoritative little essays on most of the important buildings, is a must-buy if you plan to tour this richly textured urban center. Its also one of the best small resources for anyone interested in architecture from 1850 to the present. Inexpensive, designed to slip in your pocket, it holds up well-- I depend upon mine to help me with the walking tours of the city I give on a regular basis, and its still in one piece after three or more years of hard use.