iOS map view is missing the pin for a location - ios

Question

I got a very weird problem when I tried to call iOS map for navigation from current location to a location in my app. The routes were correctly calculated, but the destination location doesn't have a pin in the map, the current location has the pin though. My code is like the following. I think I'm missing something really basic but can't figure out.... Any thoughts?
(void) routeInMap
{
CLLocationCoordinate2D location;
location.latitude = [[thisAttraction objectForKey:#"lat"] floatValue];
location.longitude = [[thisAttraction objectForKey:#"lng"] floatValue];
Class mapItemClass = [MKMapItem class];
if (mapItemClass && [mapItemClass respondsToSelector:#selector(openMapsWithItems:launchOptions:)])
{
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
[geocoder geocodeAddressString:[thisAttraction objectForKey:#"placeAddress"]
completionHandler:^(NSArray *placemarks, NSError *error) {
// Convert the CLPlacemark to an MKPlacemark
// Note: There's no error checking for a failed geocode
CLPlacemark *geocodedPlacemark = [placemarks objectAtIndex:0];
MKPlacemark *placemark = [[MKPlacemark alloc]
initWithCoordinate:location
addressDictionary:geocodedPlacemark.addressDictionary];
// Create a map item for the geocoded address to pass to Maps app
MKMapItem *mapItem = [[MKMapItem alloc] initWithPlacemark:placemark];
[mapItem setName:geocodedPlacemark.name];
// Set the directions mode to "Driving"
// Can use MKLaunchOptionsDirectionsModeWalking instead
NSDictionary *launchOptions = #{MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving};
// Get the "Current User Location" MKMapItem
MKMapItem *currentLocationMapItem = [MKMapItem mapItemForCurrentLocation];
// Pass the current location and destination map items to the Maps app
// Set the direction mode in the launchOptions dictionary
[MKMapItem openMapsWithItems:#[currentLocationMapItem, mapItem] launchOptions:launchOptions];
}];
}
}