@honoluludesktop said:
No birds in Holland?-) I can't leave my car outdoors a week without getting the glass bombed:-(
Hm, yes, I see how that might be a problem. But seeing as this building is supposed to blend in with nature, a few dirt stains would only help that effect. Not that bird dropping should be left there though, that's a bit nasty even for nature life. But cleaning the windows should be as simple as turning open the garden hose. :3