Are traditional sites in the Middle East really Biblically accurate?

There are many traditional sites across the Middle East as where Jesus, the disciples, and other people of the Bible walked and lived.  However, if you see something that is considered a “traditional site” some added research needs to be done.  If one looks at Israel today they will find at least 3 trees in Jericho where Zacchaeus climbed to see Jesus, 3 or 4 rooms that are supposed to be the upper room of the last supper, and 2 or 3 different caves that are supposed to be Jesus’ tomb.  Most of these can be dismissed as tourist attractions or created shrines built during the crusades (1000-1400 AD) for people to pilgrimage to.  The only way we would ever know exactly where these sites are, is to look at the Bible (and even it is vague on the details of the events listed as to exact location).