public IActionResult GetPointOfInterest(int cityId, int id)
        {
            if (!_repository.CityExists(cityId))
            {
                return(NotFound());
            }

            var pointOfInterest = _repository.GetPointOfInterestForCity(cityId, id);

            if (pointOfInterest == null)
            {
                return(NotFound());
            }

            var pointOfInterestResult = Mapper.Map <PointOfInterestDTO>(pointOfInterest);

            return(Ok(pointOfInterestResult));
        }