The front entrance to St. Mark's is on the left of the Orange Hall. The church is set back about 200 metres and not visible from The Mall.
For disabled persons it would be better to use the rear entrance in Victoria Street, where vehicle access is available.

Location:   North 54° 20' 57"    West 6° 38' 39"   or  54.349281,  -6.644084
If your Satellite Navigation system accepts co-ordinates then use the ones above for directions to this exact location.

To start Google Street View from this location click the Marker at the centre of the map.