[Filo]

Could you point out where in the Koran Jerusalem is mentioned as a site sacred to Islam?

The Koran doesn't, the Bible (Old Testament and New) do.

But Islam has laid claim to holy sites nonetheless...

[AmericanVictory]

Then for those of us who are not scholars of Islam, what is the basis of Islam’s claim?

[SJackson]

But Islam has laid claim to holy sites nonetheless...

They also lay claim to most of Spain, southern France and southern Italy.