well, i really find this interesting. "in" is used to describe a general location which is large in context, with the exception of either being indoor or outdoor. While "at" describes a specific location. for instance  , i could say " I live at No. 29 D'alberto Road in Lagos. D'alberto Road is just a small area in Lagos.

Well, I really find this interesting.

• in is used to describe a general location which is large in context, whether indoor or outdoor.
• at describes a specific location.

For instance, I could say:

• I live at № 29 D’alberto Road in Lagos.
• D’alberto Road is just a small area in Lagos.