The central historical figure in both Eid al Adha and the hajj is Abraham. The Qur'an does not name the son marked for sacrifice, but Muslim interpretive tradition has favored Ishmael, rather than Isaac, the intended sacrifice in the Biblical version.
Paris Hilton's new store in Mecca is not "poisoning the holy city." Mecca has been overrunning with assholes long before Islam. If you're trying to find peace and avoid shitty people, don't go there for hajj, just go on vacation or smoke blunt.