A water park will be opened in the summer this year to the southwest of Shanghai Happy Valley, which has become a new tourism landmark in the Yangtze River Delta region after four years of development.

Playa Maya, a sister park of Shanghai Happy Valley, costs more than 400 million yuan ($63 million) to build and covers a total area of about 120,000 square meters.

As the biggest open-air water park in East China, Playa Maya will be open from mid-June to mid-Sept every year, said Xu Fei, a member of the administrative staff at Shanghai OCT Co Ltd, which built the 4-billion-yuan Happy Valley in the city's Sheshan district in 2009.