private void Places_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
MyMap.RemoveAnnotations(MyMap.Annotations);
MyMap.AddAnnotations(viewModel.Places.Select(place => new MKPointAnnotation
{
Coordinate = new CLLocationCoordinate2D(place.Latitude, place.Longitude),
Title = place.Name,
Subtitle = $"{place.Stars} / 5 stars",
}).ToArray());
}