Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download PBR Temple Pack Free.
PBR Temple Pack v1.1
PBR assets to create your own temple or ruins environment!
Includes an example scene and prefabs to get you started:
Trees compatible with terrain tools (including lods and colliders)
_2k to 4k textures including albedo, roughness, mettalic and normal maps.
Lod’s for complex models
_Trees, plants, grass, roots and flowers models.
_Ruins, temple, tiles, statues, columns, vases, models.
_Rocks, cliffs, mountains models
_Particle effects, leave fall, clouds, mist and braziers.