Simplify the following text for a Grade 6 native English-speaking person.
Original: It was the tallest building in the world for over 200 years ( 1300 â `` 1549 ) , but the central spire fell down in the sixteenth century and was not rebuilt .
Simplified: It was reputedly the tallest building in the world for 249 years ( 1300 -- 1549 ) . The central spire collapsed in 1549 and was not rebuilt .