The sanctuary is not far from the town centre of Ostra. It was built in 1754 on the site of an aedicule where the image of the Vergin called Madonna of the Rose by the faithful because of the flower that she holds in her hand.

People say that in May 166 a young devout girl laid a flower before the image. Surprisingly it remained fresh for many months, so crowds of pilgrims went to this site. Due to their large number the aedicule was widened until it became the modern sumptuous church in Neoclassical style with a Baroque undertone.

The façade with simple lines and the elegant and robust belfry were built at the end of the 19^th century. Inside there are many votive tablets and Turkish flags of the year 1717.

The fame of the miracles performed by the Vergin Mary reached the Pope who granted the honor of the solemn coronation to the miraculous image and the title of sanctuary to the Chapel.