Antónia lovingly expanded the original chapel, which was small and simple, to create the ornate structure which still stands today. In part, this was a favour to the local parish priest, whom she appointed as the administrator of Vesúvio. The Padre Vilarinho da Castanheira, could therefore use the chapel to serve the local community. The key to the main door is the largest and most ornate you will probably ever see. It takes two hands just to hold it.