There is some archeologist that claim that the western wall is not part of The Holy Temple and that its actually a fortress wall of the romans,instead they claim the location of Beit HaMikdash is in the old city of David.
The Western Wall was constructed by Herod in order to serve as a retaining wall for the actual Temple Mount. It was not part of the Temple or temple mount, but was the closest Jews were allowed to approach by the gentile rulers.
The Western Wall in the midst of the Old City in Jerusalem is the section of the Western supporting wall of the Temple Mount which has remained intact since the destruction of the Second Jerusalem Temple (70 C.E.). It became the most sacred spot in Jewish religious and national consciousness and tradition by virtue of its proximity to the Western Wall of the Holy of Holies in the Temple, from which, according to numerous sources, the Divine Presence never departed. It became a center of mourning over the destruction of the Temple and Israel's exile, on the one hand, and of religious - in 20th century also national - communion with the memory of Israel's former glory and the hope for its restoration, on the other. Because of the former association, it became known in European languages as the "Wailing Wall".
The claim that you refer to was not made by archeologists, but by Arab fanatics attempting to deny any connection of the Jews to the land of Israel (even when ithat claim contradicts their own books).
'Western Wall was never part of temple' By MIKE SEID October 25, 2007
The former mufti of Jerusalem, Ikrema Sabri, has made the claim that there never was a Jewish temple on the Temple Mount, and the Western Wall was really part of a mosque.
Of course he lied
Archeologists overseeing Islamic infrastructure work on the Mount announced this week that they had unveiled a sealed archeological level dating back to the First Temple period. The First Temple was built by King Solomon in the 10th century BCE, and destroyed by the Babylonians in 586 BCE. The Second Temple was built 70 years later, enlarged during the first century BCE by Herod, and destroyed by the Romans in the year 70. The Dome of the Rock and Al-Aksa Mosque were constructed on the Temple Mount site in the late seventh century.
Israeli archaeologists on Thursday presented new details of what they said were the first tiny artifacts, unearthed in situ on the Temple Mount, ever conclusively dated to the time of the First Temple over 2,600 years ago. The discoveries were made during limited scientific excavations carried out atop the flashpoint Temple Mount in the past decade, the first of their kind since the British Mandate.
Many first and second temple era relics have been found in spill that the Arabs have attempted to throw away while carefully trying to destroy any evidence that might be found connecting the Temple Mount to the Jews.
A group of archaeology students examined Temple Mount fill dumped by the Waqf in the nearby Kidron Valley and recovered ceramic material and architectural fragments dating to this period and later.