Its destruction multiple times (in sieges and uncontrolled fires) is current historical consensus.
The sieges and fires you are referring to were hundreds of years before the supposed destruction at the hands of Christian mobs (e.g. as depicted in the movie Agora or in Sagan’s Cosmos). The latter is unsupported.
Historical consensus? So the non scientific view? Science is not consensus based.
The sieges and fires you are referring to were hundreds of years before the supposed destruction at the hands of Christian mobs (e.g. as depicted in the movie Agora or in Sagan’s Cosmos). The latter is unsupported.