... City: Le, H.L. & Pham, V. T. (2001). Dam Thoai Tieng Anh trong nganh Dich Vu Khach Le, H.L. & Pham, V. T. (2001). Tieng Anh danh cho Nhan Vien Khach San. HCM Revell, R., & Stott, ... Quang Hanh Grotto Located 9 km west of Cam Pha, Quang Hanh Grotto is the longest grotto in Halong Bay. It is 1,300 m long, and stretches throughout the stone mountain of Quang Hanh. The ... architectural constructions found in the Forbidden Purple City include the Can Chanh Palace, Ta Huu Vu (Left and Right Houses), Can Thanh Palace, Khon Thai Residence, Kien Trung Palace, Royal Library, and...