Axum is one of the most important archeological sites of Ethiopia. It is well known for its ruins of the palace of the legendary Queen of Sheba who reigned about 1000 B.C. The greatest mystery of all, however, is that the son of the Queen of Sheba, Menelik I, first king from the Solomonic Dynasty brought with him the Arc of the covenant is believed still to be kept in the church of St. Mary Zion of Axum erected on the original location of the oldest church in Ethiopia. The Axumite kings conversion to Christianity in the 4th century makes Ethiopia, after Armenia and Georgia, the third oldest Christian county. The site of the country’s most ancient city, shields and shelters a great number of priceless relic. Other ancient sites are the 2000 years old stele (some are even much older), which are made from single blocks of granite carved to represent multi-storey houses.