TWO CENTURIES TO BUILD ... DESTROYED IN 63 MINUTES

NOTRE DAME BY NUMBERS

■ Construction was ordered in 1160 and it was built between 1163 and 1345

■ It has three rose windows, the most famous of which is the South, with a diameter of 42 feet and 84 panes of glass

■ The gargoyles were added in 1240 ■ Largest of its 10 bells, the colossal 1681 ‘Emmanuel’ in the South Tower, weighs 13 tons and is tuned to F sharp

■ The great organ has 115 stops, played on five keyboards, and more than 8,000 pipes

■ Around 13 million people visit every year, 35,000 per day

■ The famous towers have 387 steps each

■ 52 acres of trees were cut down in the 12th century to construct the roof. Each beam is made from an individual tree

■ Lead roof consists of 1326 pieces, 0.2inches thick weighing 210 tons

■ The restoration cost was estimated to be around £129.5 million in 2014