Library of Celsus
In the 1960s and 1970s, the facade was restored. It now serves as a prime example of Roman public architecture. The building had a single hall which faced east toward the morning sun, as Vitruvius advised, to benefit early risers. Beside the entrances are four pairs of Ionic columns on pedestals.  A set of Corinthian columns stands directly above the first set, adding to the height of the building. It is thought there once may have been a third set of columns.