full seamless spherical hdri 360 panorama in interior large room for conference hall in equirectangular projection. empty room

360 panorama hall hdri room hdr degree equirectangular spherical seamless banquet ceiling conference empty interior meeting pattern environment map place view corridor entrance lobby palace residence vestibule area gallery space spotlight studio virtual staging windows indoor blocks cassette complex drywall hallway halogen lamps spots stretched suspended tile full large projection square columns