Borobudur is a temple site in Indonesia built during the 8th - 9th century by the Sailendra Dynasty. It is one of the world's biggest temple sites with a big stupa on its top reminiscent of a pyramid. Eventually, the dense surrounding jungle hid the temple site, and it remained forgotten for almost 1000 years until its rediscovery in 1814. There are different theories regarding the reasons for this, but the truth remains a mystery. In 1991, the temple compounds were listed as a World Heritage Site, becoming even more famous around the world.