Roadmaps are on their last legs, thanks to GPS navigation and Google Earth. But if you want to understand how to navigate around some of the world’s major cities and get a history lesson at the same time, check out the selection of relief maps from 4D Cityscape Time Puzzles. Building one of these multi-dimensional maps lets you learn how various urban centers have evolved from their earliest beginnings, up to their present-day appearances. North American city puzzles include New York, Chicago, Washington, D.C. and Toronto, Canada, but several foreign city puzzles are also available. Each sells for $40 and can be purchased at www.4dcityscape.com.