Question: did the great fire of london destroy st paul's cathedral

Answer: Yes, The cathedral was already in severe structural decline by the beginning of the 17th century. Restoration work begun by Inigo Jones in the 1620s was halted at the time of the English Civil War (1642--1651). Sir Christopher Wren was attempting another restoration in 1666 when the cathedral was destroyed in the Great Fire of London. At that point, the old structure was demolished, and the present, domed cathedral was erected on the site, with an English Baroque design by Wren.