This works in Objective-C but in MacRuby I cannot find a way to access the properties of the Boxed object that is returned by loc.coordinate in the code below. Thanks, Craig MacRuby Version 0.7 -> pulled today OS -> 10.6.3 Objective-C version: CLLocation *loc = [[CLLocation alloc] initWithLatitude:38.0 longitude:-122.0]; NSLog(@"Lat: %.2f", loc.coordinate.latitude); NSLog(@"Long: %.2f", loc.coordinate.longitude); [loc release]; // Result: // 2010-04-30 16:48:55.568 OCCoreLocationTest[70030:a0f] Lat: 38.00 // 2010-04-30 16:48:55.570 OCCoreLocationTest[70030:a0f] Long: -122.00 The loc.coordinate is a CLLocationCoordinate2D struct. typedef struct { CLLocationDegrees latitude; CLLocationDegrees longitude; } CLLocationCoordinate2D; MacRuby version: framework 'corelocation' loc = CLLocation.alloc.initWithLatitude(38.0, longitude:-122.0) # => #<CLLocation:0x20004c4e0> puts loc.class # => CLLocation puts loc.description # => <+38.00000000, -122.00000000> +/- 0.00m (speed -1.00 mps / course -1.00) @ 2010-04-30 16:37:47 -0600 puts loc.horizontalAccuracy # => 0.0 puts loc.verticalAccuracy # => -1.0 puts loc.timestamp # => #<__NSCFDate:0x20005ff40> puts loc.coordinate # => #<Boxed:0x2000af7a0> puts loc.altitude # => 0.0 puts loc.coordinate.longitude # => Error:in `<main>': undefined method `longitude' for #<Boxed:0x2000b7660> (NoMethodError)