Fun Fact: In this office building, ground floor is floor 3 or even floor 5. So, floors 1 and 2 are basements! Swedish floor numbering scheme is so weird... They're starting from the lowest basement instead of ground floor. The lowest basement is actually Floor 0 or Floor 1 there. For example, if the Swedish building has 3 basements, the ground floor will have number 3 or 4 here.
It will differ from building to building. The standard is that B is the ground floor and the numbers above starts from there, but I have seen som very weird ones as well.
@ATITANIC1992 yeah, thoose two and the senic´s basement floor doors are the only ones i know... the inside door is special designed to keep the old design it was before the mod. the outside windows are original.