Acts 14:1
And it came to pass in Iconium, that they went both together into the synagogue of the Jews, and so spoke, that a great multitude both of the Jews and also of the Greeks believed.
Nave's Topical Index—AKJV

Acts 17:1,10
Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where was a synagogue of the Jews:
Nave's Topical Index—AKJV

Acts 18:4
And he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks.
Nave's Topical Index—AKJV