Quan Lan Island is located within the area of Bai Tu Long Bay, stretching on a total area of 11 square kilometers, from Van Don mountains to Giot Mountain.
The island lies on a very important marine gateway connecting Vietnam and other countries such as China, Japan, Thailand, and The Philippines. Spreading along the coast of the island are numerous white sand beaches and this is also the sea where fishermen get high quality seafood such as squids, butterfish, mackerel, prawn, sea cucumber, etc.
During the 11th Century, Quan Lan was a busy port for international trade between Vietnam and other countries. A lot of vestiges related to trading activities have been discovered here.
The outstanding tourist attraction of this island is Quan Lan Temple, which was built in the 18th Century with impressive architectural design with finely carved patterns, and is still preserved nearly 100% until now.