Where do I go?
Turn left
Where is the red square?
Opposite the blue square
Where is the red square? (preposition)
Between
Where do I go?
Turn right
Where? On the...
right
Where? on the...
left
Where is the red square? (preposition)
In front of
Where do I go?
Go straight (on / ahead)
Where is the red square? (preposition)
Behind
Where is the red square?
At/on the corner
Where do I go?
Take the second right
Where do I go?
Take the second left
Where is the red square? (preposition)
Next to