weak point

Explore the Cryptography Tunnel beneath Thang Long Imperial Citadel.

Báo Sức khỏe Đời sống

14/04/2026

What's so special about the secret cellar at Thang Long Imperial Citadel that has just been opened?

VietNamNet

18/10/2025

There was a secret bunker during the resistance against the Americans.

Báo Công an Nhân dân

24/08/2025

The Cryptography Tunnel revolutionary historical site opens to the public for the first time.

Báo Hà Tĩnh

21/08/2025

Three exhibitions have opened, showcasing the historical sites of House and Bunker D67, the Cryptography Bunker, and the Hanoi Flagpole.

Báo Công an Nhân dân

20/08/2025