I think its in Antioch
The three places of Pauls journey were Corinth, Antioch and Thesolonica.
Missionary
Paul's First Missionary Journey. Recorded in Acts 13: 1 to 13
Pauls first mission occurred in A.D. 47. The Book of Acts records this in Acts 13:2-14:28. The earliest of Paul's Epistles, Galations (A.D. 48), 1 and 2 Thess. (A.D. 50), occurred during Paul's second journey.
Silas (Acts 15:40) Timothy was added at Lystra Acts 16:1-3. Luke is the recognized author of Acts and has references later in chapter 16 that use the pronoun "we" so he was apparently with them on this trip.
Many biblical scholars believe that the first missionary journey of Paul of Tarsus was to Cyprus. There is not 100% agreement with this however.
john
Barnabas accompanied Paul.
2 years
1st Missionary Journey - Barnabas. 2nd Missionary Journey - Silas. 3rd Missionary Journey - mostly alone, but assisted at various times by Luke, Timothy or Titus.
Paul's first missionary journey was around 46 A.D. And he took along with him his aid, a person called Barnabas.
Paul received the "Macedonian call" while on his second missionary journey. His first trip to Europe was in response to this call. You can read about when Paul started his second missionary journey in Acts 15:36-41, and when Paul received the "Macedonian call" in Acts 16:6-11, and read about the first convert in Europe in Acts 16:14-15.