The park was constructed in the 1960s largely through the manual labor of Hanoi citizens and students.
The central lake, Bay Mau, was historically a low-lying swampy area before the park's development.
The name 'Thong Nhat' translates to 'Reunification', commemorating the 1975 unification of Vietnam.
The park contains a small island accessible via a bridge that serves as a quiet sanctuary within the lake.
It is one of the few places in Hanoi where the city's Soviet-era architectural and monumental influence remains prominently visible.
Thong Nhat Park, historically known as Lenin Park, is one of the largest public green spaces in central Hanoi, centered around the 28-hectare Bay Mau Lake. The park serves as a primary recreational hub for residents, featuring extensive walking paths, mature canopy trees, and dedicated zones for outdoor callisthenics. It houses a prominent bronze statue of Vladimir Lenin, which has been a focal point since the 1980s. The grounds include dedicated children’s playgrounds, manicured flower gardens, and open plazas often used for community exercises like tai chi and aerobics. It is a vital 'green lung' in the city, providing a buffer against the urban density of the surrounding Hai Ba Trung district. The park frequently hosts seasonal flower festivals and cultural exhibitions, particularly during the Tet (Lunar New Year) period.
The lakeside view near the Lenin monument at sunset provides the best lighting for photography.
Visit in the early morning to see locals practicing various group exercises and traditional dances.
Bring mosquito repellent, especially when spending time near the shaded areas around the lake.
Use the paths on the western side of the lake for better views of the park's older, more established trees.
Avoid feeding the fish or birds in the lake to help maintain water quality and ecosystem health.
Maintain a respectful volume; avoid loud music as the park is a community space for relaxation and exercise.