This is a design made entirely in Maya and textured with Substance Painter, there is nothing designed inside it only has details on the outside, I am attaching an OBJ file and an FBX file as well as a rar file with the textures of the building
OBJ (OBJ, filesize: 4.8 MB), FBX (Autodesk FBX, filesize: 1.3 MB), SPP (Substance Painter, filesize: 5.39 GB)