A Model of my office building.
Scene has taken too long so I'm moving on
Final Rendered With Cycles (10,000 Samples, 11 hours) And Eevee(300 samples, 3 minutes).
Tiles, and cobblestone textures from poliigon.com,
grunge from textures.com,
HDR - Pro Lighting Skies,
Reflection HDR - HDRIHaven.com (credits to Greg Zaal)
credits to Nobiax_Yughues for concrete walkway texture.