Which national park in Venezuela contains the world's highest waterfall and is a World Heritage Site?

The national park in Venezuela containing the world’s highest waterfall and designated a World Heritage Site is Canaima National Park.

Canaima protects a vast landscape of tepuis, ancient table-top mountains with sheer sandstone cliffs and unusually isolated ecosystems. About 65 percent of the park is covered by these high plateaus, whose geological foundations date back hundreds of millions of years. Their isolation has helped produce many endemic plants and animals.

Angel Falls, known locally by the Pemon name Kerepakupai Merú, plunges from Auyán-tepui inside the park. Its total height is 979 metres, including the main uninterrupted drop and lower cascades, making it the world’s tallest uninterrupted waterfall. Water often turns to mist before reaching the base during dry periods.

UNESCO inscribed Canaima National Park as a World Heritage Site in 1994 for its exceptional geology, scenery, biodiversity, and cultural importance. Mount Roraima is another famous tepui in the park, but it is not the park itself and does not contain Angel Falls.