1) The Serengeti National Park, located in Tanzania and extending into Kenya, is renowned for its vast savannahs, diverse wildlife, and the annual wildebeest migration. It is a UNESCO World Heritage site and a popular destination for safari enthusiasts and nature lovers.

2) The Earth's core is primarily composed of iron and nickel and is as hot as the surface of the sun.

3) The world's oldest university, Al-Qarawiyyin, was founded in 859 AD and is located in Fez, Morocco.

4) The Pacific Ocean is the largest ocean on Earth, covering more than 30% of the planet's surface.