Hidden amidst the picturesque landscapes of Vietnam lies an architectural marvel that echoes the country's rich historical legacy. The Co Loa Citadel, situated in the Dong Anh district of Hanoi, stands as a testament to Vietnam's ancient past and serves as a remarkable reminder of its enduring cultural heritage. This remarkable fortress holds a significant place in Vietnamese history and continues to captivate visitors from around the world with its grandeur and mystique.

     Believed to have been constructed in the third century BC, during the reign of King An Duong Vuong, the Co Loa Citadel represents the ancient capital of the Au Lac Kingdom. The citadel was strategically designed to safeguard the kingdom against invasions and to serve as the seat of power for the ruling dynasty. Its unique circular structure, spanning an area of over 5 square kilometers, stands as a remarkable feat of ancient engineering and architecture.

     The Co Loa Citadel is enveloped by a series of concentric walls, forming intricate rings around the central core. These walls, built using large, intricately crafted stones, once provided formidable protection to the citadel. The outermost wall, known as the "Co Loa Wall," stretches for nearly 8 kilometers, encircling the entire citadel complex. As one progresses inward, they encounter the "Cua Thanh" (Main Gate), which leads to the inner sanctum of the citadel.

     The heart of the citadel is dominated by the "Imperial Palace," where the king and his court resided. Although the palace's physical remnants have faded over time, its historical significance remains intact. The palace was once adorned with opulent decorations and intricate architectural details, displaying the wealth and power of the Au Lac Kingdom. Today, visitors can still explore the palace grounds and witness the remnants of its past glory.

     One of the most intriguing aspects of the Co Loa Citadel is its complex system of underground tunnels and chambers. These tunnels, stretching over 60 kilometers in length, served as strategic escape routes, secret passages, and storage facilities during times of conflict. Exploring these underground labyrinths offers a unique glimpse into the citadel's military strategies and the challenges faced by its defenders.

     The Co Loa Citadel is not just a historical relic; it also holds a deep cultural significance for the Vietnamese people. Legend has it that the construction of the citadel was aided by a mythical creature, the "Golden Turtle," who presented King An Duong Vuong with a magical crossbow. This crossbow played a crucial role in defending the kingdom against foreign invaders, further cementing the citadel's place in Vietnamese folklore.

     In recognition of its cultural and historical value, the Co Loa Citadel was designated as a National Historical Monument in 1962. Efforts have been made to preserve and restore the site, ensuring that future generations can experience and appreciate its grandeur. Today, visitors can immerse themselves in the rich history and architectural wonders of the Co Loa Citadel, exploring its ancient walls, walking through its gates, and delving into its captivating past.

     Beyond its historical significance, the Co Loa Citadel also offers a tranquil escape from the bustling city of Hanoi. Surrounded by lush greenery and serene lakes, the site provides a serene setting for visitors to connect with nature while basking in the magnificence of Vietnam's ancient history.

     The Co Loa Citadel stands as a living testament to Vietnam's enduring legacy and serves as a symbol of national pride. Its ancient walls whisper stories of battles fought and dynasties risen and fallen, leaving an indelible mark on the country's collective memory. A visit to the Co Loa Citadel is not merely a journey through time; it is an opportunity to pay homage to Vietnam's rich cultural heritage and to be inspired by the resilience and ingenuity of its people.

     More informations:

     + Address: Cổ Loa, Đông Anh, Hanoi 100000

     + Hours: 8:00 am to 5:00 pm (Every day of the week)

     + Fee of Ticket: 

          - 10,000 VND/time/ADULT; 

          - 5,000 VND/time/STUDENTS, ELDERLY; 

          - Free of charge for CHILDREN (< 15 years old);

     + How to get to Co Loa from Hanoi?

          - Method 1: You can use bus with number: 46, 43, 15, 17, 59;

          - Method 2: You can go to Co Loa by Motorbikes to Thang Long Bridge or Chuong Duong Bridge or Nhat Tan Bridge.