De locis sanctis (Concerning sacred places) was composed by the Irish monk Adomnán, a copy being presented to King Aldfrith of Northumbria in 698.
[1] The first book of Adomnán's transcription concerns what Arculf saw during nine months he spent in Jerusalem ca 680 AD, beginning with useful descriptions of "the Sepulchre of the Lord and the Church constructed over it, the form of which Arculf himself depicted for me on a tablet covered with wax" and mentioning the Basilica of Constantine and other features such as the column that marked the center of the Earth.
Arculf also saw many relics such as the miraculous grave cloth of Jesus (compare the Shroud of Turin), which had brought generations of good fortune, and the very fig tree on which Judas Iscariot hanged himself.
Arculf continues with brief allusions to the cities of Damascus and Tyre, then he left Jerusalem and traveled forty days to reach Alexandria, where was the church containing the tomb of the Evangelist Mark.
Arculf mentions the relics of the True Cross and legends of George the Confessor, adds a note about the island of Mount Vulcanus east of Sicily and ends rather abruptly, with a brief Epilogue.