Stock photography, photos: couple at the Great Wall Stock photos of Retired couple at the Great Wall of China at Simatai Photograph: © Bill Bachmann Click for a larger image and more information Keywords associated with this stock photo: Retired, senior, travelers, travel, adventure, United States, tourism, tourists, camera, pictures, happy, smile, smiling, merriment, married, wonder, Asia, China, Great Wall, monument, landmark, famous, emperor, dynasty, protection, protect, fortress, soldiers, war, fight, brick, border, steep, mountains, outer space, walkway, ancient, historic, history, trek, climb, hike, joy, joyful, celebrate, anniversary