Lan Tri village has a relatively small area, located between the two inner and middle citadels to the northwest. Lan Tri village also has another name, Lam Tri or Lang Tri, commonly known as Cha Lan. There are many different explanations for the origin of this name. There is an opinion that the village used to have a pond called Lam Tram (around the pond there were many trees, mostly Tram trees), commonly known as Lam Tri. Another opinion is that in the past this was the royal garden of the king, the king often came to play, inside the garden there was a pond, there were many large orchids, so it was called Lan Tri. There is also an opinion that Lan Tri is a mispronunciation of Lang Tri, because in the past the section in front to the left of the village was the place to execute criminals during the reign of King An Duong Vuong. Or another opinion is that because it was near To Chi area, there were orchids, so it was called Lan Chi, read differently as Lan Tri.
During the Mac Dynasty, residents from Thanh Nghe region poured into Co Loa region to occupy the ancient citadel area, reclaimed land, established fields and villages. Lan Tri village was established during this period. The first family to come here was the Lai family in Ha Trung - Thanh Hoa. According to a family member, Mr. Lai Duy Chi, who passed the Third Class Doctorate exam in 1700, moved his family to Co Loa land to Lan Tri village to settle down and make a living. In addition, in the village there were also the Dao and Do families from Cho village.
Lan Tri village is located inside the Central citadel and northwest outside the Inner citadel. In the past, there was a moat of the Inner citadel flowing from the north down (the moat separating Dong village and Chua village), later that area was called Ao Cham, Dam Go. Cultural, religious and belief architectural works in the village such as: Lan Tri village temple, Village gate.
Lan Tri village temple consists of 3 rooms, built facing south. There are small ponds on the right and in front of the temple. The temple was recently renovated, the temple pillars were raised 60cm higher. The construction date is still recorded on the upper beam: Dinh Mui year, Thanh Thai 19th year (1907).
Lan Tri village used to have two gates, one in the south (near the temple) and one in the north (near Dong village). The front gates were built of bricks, arched, the doors were made of bamboo, opened every morning and closed in the afternoon. The gates were destroyed during the resistance war against French colonialism.

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