At the end of his third missionary journey, Paul returned to where he was beaten and arrested.

Jerusalem.

Explanation:

Paul was born in Tarsus, a city in the southeastern corner of Asia Minor. Around AD 33, he converted to Christianism after an appearance of Jesus on his way from Jerusalem to Damascus. Paul undertook three major missionary journeys, in which he spread the teachings of Jesus Christ throughout the Middle East and Greece. On his return to Jerusalem, he was accused of bringing a "Gentile" into the temple. A commotion ensued and he was arrested by the Romans and imprisoned in Caesarea, the coastal city where the Roman procurator resided. Finally, as a Roman citizen, he appealed to the emperor. Paul and some other prisoners were taken to Rome by ship in AD 60 by Roman soldiers.

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