Ruins of the library built in Ephesus as a memorial to Titus Julius Celsus. In 92 CE Celsus was a consul in Rome, in charge of all public buildings. Between either 105-106 or 106-107 CE he was the proconsul of the Asian province, the capital of which was Ephesus. When Celsus died in 114 CE. at the age of seventy, his son Tiberius Julius Aquila, built the library as a mausoleum for his father. It is assumed that the construction of the library was completed in 117.