The Vietnam Record Organization acknowledges it as the largest artificial beach in Vietnam at 21,000 square meters and 1.4 meters at its deepest point.
Everyone is required to wear a life jacket.
Vietnamese are enjoying a five-day break starting Saturday for the Reunification Day and Labor Day holidays on April 30 and May 1.
Next to the artificial beach is a water park for children with slides coming down from castle-like towers.
The play areas are spacious, ensuring there is no overcrowding.
Nguyen Vu Tuong Vy is dressed as mermaid to play in the water with children. A part-time employee of the park, Vy spends 1.5 hours every day during the holidays as a mermaid.
"Although the weather is quite hot, seeing the children happy and surrounding me is enjoyable," the 21-year-old, who is still in college, says.
Visiting her children and grandchildren from the central Nghe An Province for the holidays, Luong Thi Loan takes photos with her grandchildren in the play area.
"There are many interesting games here that help relieve the heat," she says.
Yen Nhi, 24, of neighboring Binh Duong Province, visited the Son Tien tourist area for the first time on Sunday.
"There are more interesting games here than in other parks," she says.