In the wake of the Sacking of Coruscant the deep core world of Tython, the once ancient home of the Je'daii and its successor the Jedi, was restablished as the new home of the Jedi Order after its was rediscovered while the Jedi paved new hyperlanes into the Deep Core.
Nested next to a small mountain range, the Temple was built on the foundations of an ancient Temple, using Alderaanian concepts to create the iconic two story Temple. The Jedi Temple on Tython was erected after the destruction of the Temple on Coruscant during the Sacking, becoming the home of the Jedi Order.
Located all across the planet, the Jed'aii Temples were created between in the very beginnings of the Jed'aii Order, as nine Temple-Cities that represented different parts of their Order. Over the years, these temples were neglected and began to decay. Many priceless Jed'aii artefacts still remain within their halls, though entering is considered dangerous to all but the most skilled Jedi.