World’s oldest pyramid' built 25,000 years ago was not made by humans, archaeologists claim

While Guinness World Records officially lists the Djoser Step pyramid in Egypt as the world’s oldest pyramid (around 2,630 BC), one paper published in October claimed a layer of the Gunung Padang pyramid in Indonesia was constructed as far back as 25,000 BC – though there has since been doubts as to whether the structure was ever man-made at all.