PlacesOnLine.org is a Web portal that provides easy access to high quality Web sites that focus on places from around the world. It is intended for use by a wide range of people, including professional geographers, teachers and students at all levels, and the general public. This article explores the potential uses of PlacesOnLine as an educational resource. Specifically, it provides examples of PlacesOnLine learning activities that can be used for teaching students at levels ranging from K-12 to college. The activities are designed to help students understand places using the World Wide Web and to explore how and why people represent places on the Web. They are also designed to help teachers get the most out of using the Web. (Contains 1 figure and 1 note.)