Co Loa Citadel

Côi Loa

An ancient citadel dating back over 2,000 years, featuring concentric spiral ramparts representing Vietnam's oldest known fortress architecture. Located near Hanoi, it's significant for understanding Vietnamese history and offers peaceful grounds for exploration.

Things to do

• Walk the Spiral Ramparts — Explore the three concentric earthen walls that form the citadel's distinctive spiral pattern, dating back to the 3rd century BC and representing Vietnam's oldest fortress design.
• Visit the Dong Nhan Temple — Pay respects at this ancient temple dedicated to the legendary An Duong Vuong, the citadel's founder, located within the inner rampart.
• Climb to the Central Tower Site — Ascend to the highest point of the citadel to see remains of the ancient watchtower and enjoy panoramic views of the Red River Delta.
• Photography at Dawn — Capture the atmospheric morning light across the ramparts and surrounding countryside, when mist often settles over the earthworks.
• Explore the Gateway Entrance — Examine the reconstructed southern gate structure that once controlled access to this strategic fortress location.
• Study Ancient Stone Markers — Inspect scattered archaeological markers and explanatory stones that detail the citadel's construction phases and historical significance.

Food to try

• Pho from local Hanoi shops — Sample authentic Vietnamese beef noodle soup from vendors in nearby villages, using traditional recipes passed down through generations.
• Com tam (broken rice) — Try the local favorite of broken rice cooked with pork, egg, and pickled vegetables, commonly eaten for lunch by workers and visitors.
• Fresh spring rolls with local herbs — Enjoy banh cuon or summer rolls filled with fresh herbs, greens, and proteins from Red River Delta gardens.
• Red River fish dishes — Taste locally-caught fish prepared simply grilled or in light broths at nearby restaurants in Co Loa village.

Local customs & good to know

• Respectful dress at temples — Wear modest clothing that covers shoulders and knees when visiting Dong Nhan Temple or other sacred areas within the citadel.
• Best visited in dry season — Plan your visit between October and April to avoid muddy ramparts and heavy rains that make exploration difficult during monsoon months.
• Hire a local guide — Consider engaging a guide from the nearby visitor center who can explain the spiral rampart system and historical significance in detail.
• Visit early morning or late afternoon — Arrive before 9 AM or after 3 PM to experience the citadel with fewer visitors and better natural lighting for understanding the ancient layout.