Located on National Highway 4D, straddling the border between Lao Cai and Lai Chau provinces, O Quy Ho Pass stretches approximately 50 kilometers, making it one of Vietnam's longest mountain passes. This area is a popular tourist destination, renowned for its breathtaking natural scenery.

Sa Pa township in the northern province of Lao Cai stands 1,600 meters above the sea level. The cool weather and the pristine beauty of natural scenes are among the most attractive things in Sa Pa, making it a popular resort area in the north of Vietnam.