Aksum is a city in northern Ethiopia. It's known for its tall, carved obelisks, relics of the ancient Kingdom of Aksum. Most are in the northern Stelae Park, including a huge fallen pillar, now in pieces. Centuries-old St. Mary of Zion is a Christian church and pilgrimage site believed to have housed the biblical Ark of the Covenant. The neighboring Chapel of the Tablet is said to contain the Ark today.