[donmeaker]

The current western wall is all that is left of Herod’s temple.

After the conversion of Constantine in the 4th Century, there was a lot of building that supported pilgrimage/tourism. Constintine’s mother (Helen) toured Jerusalem, and (knowing she was coming) the locals had a number of things that they helped her find. For example, three crosses were dug up, but it was unknown which was ‘the True Cross’ so they were each, in turn applied to a woman with ‘a headache’. After the third was applied, she miraculously was healed, so that must have been ‘the True Cross’.

They said one was better off as Herod’s pig than as his son. He had one of his son’s killed for disobedience, but Herod was a Jew by religion, and was reported to keep kosher.

[Verginius Rufus]

I have a Baedeker's from 1911 which says that "the huge substructions of the Temple plateau...still date from the reign of Herod." (They call his the third Temple). But maybe the state of knowledge has advanced since 1911.

The emperor Julian the Apostate reportedly planned to rebuild the temple but died before he had a chance.