In the northwestern Gansu province of China lies the Zhangye Danxia Landform Geological Park, a gorgeous expanse of land known for its rainbow-colored rock formations. Bands of fiery red, creamy orange, rich green, and bright yellow streak across the mountains, forming the most beautiful geological layer cake we have ever seen.
Maijishan Grottoes. Located Southeast of Tianshyui City in Gansu Province on a 142 meters high hill named Maijishan, meaning "Wheat-pile Hill". Work on the grottoes started in the late 4th century and continued through successive North Wei (386-534 A.D.) and Song (960-1279 A.D.) dynasties until the 19th century. There are 194 existing caves, in which are preserved more than 7,000 sculptures made of terra cotta and over 1,000 square meters of murals.