Unit 1 The Great Wall Unit 2 The Palace Museum Unit 3 Lanes Unit 4 Towers Unit 5 Suzhou Gardens Unit 6 Earth Buildings Unit 7 Grottoes Unit 8 Ancient Water Conservancy Projects Unit 9 Ancient Academies Unit 10 Ancient Villages Unit 11 Ancient Cities Unit 12 Tibet Unit 13 The Three Gorges Unit 14 Modern Architectures Keys to the Exercise