The stadium is...
ON YOUR LEFT / ON THE LEFT
Where is the dog?
The dog is UNDER the box.
The library is...
ON YOUR RIGHT / ON THE RIGHT
Where is the dog?
The dog is ON the box.
Where is the dog?
The dog is BEHIND the box.
Where is the dog?
The dog is NEXT TO/BESIDE the box.
Where is the dog?
The dog is IN the box
Where is the dog?
The dog is BETWEEN the boxes.
Where is the dog?
The dog is IN FRONT OF the box.