Also the city of Colonge, Germany, it is said that the remands of the Magi were taken to and re-buried.
They may have been preserved by artifical means (their bodies), but it is my personal belief that they followed the life of Christ, and they were blest for that.
I know I have heard of things about this from perhaps the History Channel.
Considering how the Apostle Thomas had his remains returned from India (Kerelya), it makes sense that the Christiams took great care of those they considered saints.
I believe Mary and Martha (sisters of Lazarus) were buried in the South of France, along with Saint Anne (mother of Mary)...
In the year 2000, the Jesuits did scientific tests on the body of the Gospel writer Luke, who is buried in Padua, Italy... Tradition had it had Saint Luke had an disease of old age that affected his back. This was also found on the body buried at Padua... (And I imagine they proved the body was 2000 years old...)