Located along the banks on Yihe River in Luoyang, Henan Province, the Longmen Grottoes are important cultural relics under state protection. The carvings started in 493, and took more than 400 years (Eastern Wei, Western Wei, Northern Qi, Sui, Tang, and Northern Song dynasties) to complete. Along the cliffs, there are more than 2,100 inches, 2,800 inscribed stone tablets. Buddhist pagodas and nearly 110,000 Buddhist images and statues still exist today.