The Christian Topography (Ancient Greek: Χριστιανικὴ Τοπογραφία, Latin: Topographia Christiana) is a 6th-century work, one of the earliest essays in scientific geography written by a Christian author. It originally consisted of five books written by Cosmas Indicopleustes and expanded to ten and eventually to twelve books at around 550 AD. Source: Wikipedia (en)