Lost or severely damaged in the shaking were ancient Roman walls, Gothic and Baroque churches and centuries-old paintings crushed beneath tons of brick, sandstone and marble.
Italian Premier Matteo Renzi said the nation's "soul is disturbed" by the series of quakes, starting with the deadly Aug 24 event that killed nearly 300 people, two back-to-back temblors on Oct 26, and the biggest of them all, a 6.6-magnitude quake that shook people out of bed yesterday morning. It was the strongest quake to hit Italy in 36 years.
Renzi vowed to rebuild houses, churches and business, saying, "a piece of Italian identity is at stake at this moment."
"Feeling the earth collapse beneath your feet is not a metaphorical expression but is what happened this morning, and half of Italy felt this," Renzi said.
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Two churches were destroyed the 14th century Basilica of St Benedict, built on the traditional birthplace of St Benedict, founder of the Benedictine monastic order; and the Cathedral of St Mary Argentea, known for its 15th century frescoes. Only the cracked facades were still standing, with most of the structures disintegrating into piles of rubble and dust.
Television images showed nuns rushing into the main piazza as the bell tower appeared on the verge of collapse. Later, nuns and monks knelt in prayer in the main piazza. A firefighter appealed to a priest to help keep residents calm in an effort to prevent them from looking for loved ones.
"But we had courage, because we were in our house and the Lord protects us," one nun told The Associated Press. Large sections of Norcia's ancient Roman city walls which suffered damage and cracks in the previous quakes crumbled, along with towers.