* Literal: "The ancient castle stood as a mighty bastion against invaders, its walls fortified and its defenses strong."
* Figurative: "The small, independent bookstore remained a bastion of literary culture in a world dominated by online retailers."
* Abstract: "Despite the changing landscape, the family's strong values served as a bastion of stability and tradition."
Let me know if you would like to see more examples or have a specific context in mind!