Where the Brazilian state of Paraná borders Argentina, the area includes what National Park, a UNESCO World Heritage Site since 1986?
Iguaçu The Park shares a border with Iguazú National Park in Argentina, and the waterfalls on the Iguaçu / Iguazú River which are in both parks extend along the river 2.7 km (1.7 mi) and together make up the largest waterfall system in the world.
Where does the UNESCO World Heritage Site known as the Grand Canal, the longest and oldest canal or artificial river in the world, flow from and to?
Which UNESCO World Heritage Site in India covers the greatest land area, and is considered one of the "hottest hotspots" of biological diversity ?
