Aurum’s Sanctuary is an ancient temple located beyond the Eastern Ridge. Locals know lots of legends about this mysterious place, but one thing is certain: the temple holds untold treasures.

Inside the sanctuary you can find ancient vases, treasure and other resources for island development. Ancient vases are relatively simple to get. Just wait for the timer to run out or use the speed up button.

To gain access there, destroy the Eastern Ridge. To do this, buy the adjacent territory.
Then complete Naomi's quests.
When the path is clear, you can purchase the territory where the temple is located.