According to the book "Đại Nam Nhất Thống Chí, during the Lê Trung Hưng dynasty, the Lê-Trịnh government already constructed the Sơn Tây citadel. Its location was in La Phẩm commune, Tiên Phong district, Quảng Oai prefecture (now part of Tản Hồng commune, Ba Vì district). Around the reign of Cảnh Hưng (1740-1786), to avoid floods, the citadel was relocated to Mông Phụ commune, Phúc Thọ district, Quốc Oai prefecture (now part of Đường Lâm commune, Sơn Tây town). In the early years of Gia Long's reign of the Nguyễn dynasty, the Sơn Tây citadel remained in its original position. In the third year of Minh Mạng's reign (1822), the citadel was moved to the locations of two communes, Thuần Nghệ and Mai Trai, which are now situated in the center of present-day Sơn Tây town, including the Quang Trung, Ngô Quyền, and Lê Lợi wards.

The lion originally symbolizes a Buddhist mythological creature. According to Buddhist mythology, the lion was one of the past lives of the Buddha. The strength of the lion represents the power of the Buddha, and the Buddha's teachings are likened to the roar of a lion, known as the "Lion's roar." The seated posture of the Buddha is referred to as the "Lion's seat".

In the current era of mass media, on October 10 every year, newspapers and television stations nationwide simultaneously report on this historic event. The takeover of the Capital on October 10, 1954, has gone down in history as a Peace Festival for the people of the Capital. Going back in time, for nearly 70 years, through documentary footage and black and white photos tinged with time, especially the newspaper issues published weekly before the takeover of the capital, each person felt joy and emotion that was indescribable.

Our ancestors passed down a saying: "Nhất chữ, nhì tranh, tam sành, tứ gỗ" (First characters, second painting, third porcelain, fourth wood). According to this saying, aesthetic words have been highly valued, to the point of reverence, along with the long-standing Confucian tradition of our nation. The custom of displaying “Hoành Phi” (horizontal panels) and “Câu Đối” (parallel sentences) has also been well developed over the years.

Seventy-seven years have passed since the "Declaration of Independence" was read at Ba Dinh Square. The red flag with the yellow star was raised to the joy of tens of thousands of people as the majestic sounds of Tien Quan Ca (Army March - The national anthem of Vietnam) resounded:

Around 1884, French Ambassador Bonnal erected several light poles along the road around Hoan Kiem lake, Hanoi. These were the first light poles in Hanoi. In 1892, construction began on the Bo Ho lamp factory with a capacity of 0.5 MW running on oil. By 1899, the factory's capacity increased to 850 horsepower to meet the office power supply around Hoan Kiem lake. After that, the government installed more light poles around Hoan Kiem lake, Yen Phu dike border gate and several other locations. At this time in Hanoi, two types of light poles were manufactured: lit by oil and by electricity.

On the morning of September 15, 2023, the Opening and Award Ceremony of the 5-year National Sculpture Competition and Exhibition took place at the Hanoi Museum.

After claiming sovereignty over the country and Thang Long, the Nguyen court realized that the old buildings of Thang Long Capital under the Le Trung Hung period was seriously degraded. Therefore, the Nguyen dynasty rebuilt Thang Long with a new role as the capital of Bac Thanh town, then Hanoi province. The rebuild also sought to meet the multifaceted requirements of the new era in defence technology such as the changes in citadel construction techniques, new military techniques of the world such as the proliferation of fortified citadels, firearms, warships along with the East-West cultural interchange.

The Tree Planting festival, launched by Uncle Ho in the spring of 1959, has continued for over 60 years and is beloved by people in all parts of the country. Every year, when spring comes, people and governments everywhere organize a tree-planting festival according to Uncle Ho's will.

The Hanoi Museum is conserving four groups of artifacts (total of 24 objects) which have been recognized as National Treasures according to Decision No.