Tuanjiehu Park, Public park in Chaoyang District, Beijing, China.

Tuanjiehu Park is a public park in Chaoyang District, Beijing, built around a ring-shaped lake finished in 1958, one of the ten largest lakes in the urban area. Its landscaping follows the garden and water-town style of the Jiangnan region. A single-storey pavilion with white walls and grey tiled roofs stands at the water's edge: a taller central gable with upturned eaves, lower wings on either side, dark wooden columns, an open veranda with a wooden railing, and two vertical signs with Chinese characters on the white wall.

The central lake was created in 1958 during an early expansion phase. The surrounding park facilities and landscaping were completed three decades later in 1986 as the area developed.

The lake's ring shape gives the park its name: Tuanjiehu means Lake of Unity. The grounds follow the classic gardens and water towns of the Jiangnan region, with pavilions such as the white-walled, grey-tiled one at the water's edge, its upturned eaves and dark wooden columns framing an open veranda. Two vertical signs with Chinese characters hang on its walls.

The park lies just outside the eastern stretch of the 3rd Ring Road in Chaoyang District; Hujialou station on Subway Lines 6 and 10 is the nearest stop. The lake is ring-shaped, so a loop path circles the water past the pavilions. Visitors come from early morning to late evening year-round.

The lake's circular shape was deliberately designed to match its name meaning - Tuanjiehu translates to Lake of Unity. In Chinese tradition, this round form symbolizes wholeness and harmony.