Zhangye (張掖) is a major historical city situated in the heart of Gansu Province's Hexi Corridor, celebrated for its unique blend of Silk Road heritage and striking geological wonders. The city is most famous for the Zhangye National Geopark, where millions of years of mineral deposits and erosion have painted rolling sandstone hills in vibrant bands of red, yellow, and orange. Historically, Zhangye served as a key trading and military hub along the ancient Silk Road, a legacy reflected in sites like the Great Buddha Temple which houses China's largest indoor reclining Buddha.