Axum Empire

According to Ethiopian church tradition, the Ark of the Covenant is kept in the Chapel of the Tablets in Axum, the capital of the former empire.

An excerpt from the article 20 facts about Axum Empire
In line with the 14th-century accounts, Menelik I-Ebna la-Hakim (10th century BC), the first king of Ethiopia (legend has it that he was the son of the Queen of Sheba and King Solomon), brought the Ark of the Covenant from Israel.