On the Belarusian side , the forest is protected as the Belovezhskaya Pushcha National Park with area 1,771 km2 ( 684 sq mi ) ; the core , strict protected , area covers 157 km2 ( 61 sq mi ) ; the buffer zone 714 km2 ( 276 sq mi ) ; and the transition zone 900 km2 ( 350 sq mi ) ; the National Park and World Heritage Site comprises 876 km2 ( 338 sq mi ) .
The National Park and World Heritage Site are 876 km2 ( 338 sq mi ) .