Er, hier, and daar can refer to a location. If they do, they translate to 'here' and 'there'.
|Yesterday, it was raining very hard there.
|They went to school here for six years.
In Dutch, we use the expression op school zitten (to sit at school).
|He has not seen anyone there today.
In the above sentence, the emphasis is on the fact that the subject has not seen anyone today. The word 'there' is unstressed. Note that even in an unstressed form, it is also perfectly correct to use hier or daar. It is just more common to use er here.