Christopher Columbus's journal (Diario) is a diary and logbook written by Christopher Columbus about his first voyage. The journal covers events from 3 August 1492, when Columbus departed from Palos de la Frontera, to 15 March 1493 and includes a prologue addressing the sovereigns. Several contemporary references confirm Columbus kept a journal of his voyage as a daily record of events and as evidence for the Catholic Monarchs. Upon his return to Spain in the spring of 1493, Columbus presented the journal to Isabella I of Castile. She had it copied, retained the original, and gave the copy to Columbus before his second voyage. The whereabouts of the original Spanish text have been unknown since 1504.