The library of Celsus is an ancient Roman building in Ephesus, Anatolia, now part of Selçuk, Turkey. It was built in honour of the Roman Senator Tiberius Julius Celsus Polemaeanus by Celsus' son, Gaius Julius Aquila.
Walking through the ruins in Ephesus. It's a must-do if you're Mediterranean Cruise includes Turkey. There's so much history here but a guided tour is the best way to learn about it. And this is definitely worth adding to your travel bucket list.