Technology that helps students view images in three dimensions (3-D) can support a broad range of learning styles. "Geo-Wall systems" are visualization tools that allow scientists, teachers, and students to project stereographic images and view them in 3-D. We developed and presented 3-D visualization exercises in several undergraduate courses. Students in introductory-level classes benefited from the novel presentation of material. Advanced undergraduates and graduate students appreciated the opportunity to analyze the advantages, limitations, and potential applications of the new technology. 3-D visualization technology, which is more affordable and convenient than ever before, may offer an untapped potential in geography instruction at many levels.