Executive summary by darmansjah
Taj Mahal, India
Mesa Verde National Park, Colorado
Pompei, Italy
Tikal
Petra, Yordania
Great Pyramid of Giza
Easter Land
Great Wall, China
Northern Light, Iceland
Serengeti National Park, Kenya
Falling Water, Pennsylvania
Yangtze River, China
Antartica, USA
Mount Kilimanjaro, Kenya
Grand Canyon, Arizona