architecture wallpaperProviderpixabayResolution5184 × 3296Aspect ratio1.57:1Authorpixel2013SourceOpen original page Download wallpaper Available sizesPreview150 × 95Web640 × 406Large5184 × 3296Tagsarchitectureuniversity hospitalhospitalclinicuniversity medicinebuildinguniversitymedical facultyreinforced concrete skeleton structureunusual