Slant door
Meeting a sideways leaning door

 
A sideways leaning door purposely designed that way is quite rare, which has practical reasons of course, because only a door that is hinged vertically can be held stable when opened.

The slant door pictured here was found in a passage between two buildings.

 
1
 
 
The area in front of the door is grass and no path is leading to it. So unfortunately they missed a chance to make it a credible entry instead of only a design feature.

 
2
 
 
This is the backside of the passage. The dark part is the wall with the door.