Do they really know where the tombs of Queen Esther and Mordechai are located? That is pretty amazing to me.
Esther is one of the last characters in the Old Testament. She would of lived sometime in the 500s BC, after the Persians conquered Babylon.
Virtually every Old Testament character like Solomon, David, Joshua, Moses and Abraham was far earlier.
Religious “tourism” (or pilgrimages, take your pick...) are as old in the Middle East, as the Middle East itself...and there are “traditional” sites (or tombs) for practically everything or everyone significant in the Bible. Now whether these traditional tourist sites are TRUE or not...is another matter.
(I recall reading about the discovery of the foundations of a church built over a rock Mary was supposed to have rested on on the journey to Bethlehem. Yeah, OK....)