Minecraft wiki entry for Bastion_Remnant, associated text: Bastion remnants generate as 4 types of structures: bridges, hoglin stables, housing units, and treasure rooms. Each type has its own set of structures that compose it. These structures may be supported by ramparts that contain cave-like paths. Piglins, piglin brutes, and hoglins spawn frequently throughout. Unlike nether fortresses, when over the lava ocean, they do not generate pillars of solid blocks down to the solid terrain beneath, but float above, entirely even.