Tour with the author Xavier Marcé the iconic fortress of the Cát Bà Cannon Fort, located next to the town and island of the same name, in the famous Ha Long Bay, in the northeast of Vietnam. This location appears in the fiction of The Stone Lotus and although it is currently abandoned, in the past it was a military enclave of great importance.

Accessing the fortress is relatively easy, although you may have to pay a local toll to enter. The facilities occupy an entire mountain and it is rumored that they also extend underground through galleries and underground bunkers. In addition to being able to see the remains of its facilities, visitors will be able to enjoy unique views of Ha Long Bay.