After a period of estrangement with Tang China, diplomatic relations resumed and the so-called international style of the Tang heavily influenced Korea as it did much of the rest of Asia. Buddhism was heavily sponsored and promoted by the royal court. The early century of the Unified Silla period is known as a golden age of Korean history where the kingdom enjoyed the peace and stability to produce fabulous works of art. The central Buddha of the Seokguram Grotto, a UNESCO World Heritage site, is recognized as one of the finest examples of Buddhist sculpture in eastern Asia.