Complex sentence: From the square terrace a cylindrical bell tower rises to a height of 12.5 metres (40 feet), made of sixteen red granite columns supporting a monumental statue of the Virgin Mary 11.2 metres (36 feet) tall.
Split into simpler sentences: From the square terrace a cylindrical bell tower rises to a height of 12.5 metres (40 feet). It is made of sixteen red granite columns supporting a monumental statue of the Virgin Mary, 11.2 metres (36 feet) tall.