Acts 28:15 - Matthew Poole's English Annotations on the Holy Bible

Appii forum; a place about one and fifty miles, or seventeen leagues, from Rome; so called from Appius Claudius, who made a way from Rome thither, called from his name: The Appian Way; and had his statue there set up; which is the reason why it is called thus: for the Romans did call those places fora, were such statues were placed. (The concourse to see those statues might bring them to become markets). The three taverns; as that was a place of resort for the buying and selling of other commodities, so this for the affording of necessary provision; a little town, hence so called, about three and thirty miles, or eleven leagues, from Rome. So that some came a greater, some a lesser way to meet with Paul, and show their respect unto him. These brethren are thought to have been converted by such as at the day of Pentecost were present when those miracles were wrought, Acts 2:10, it being expressly said, that there were strangers from Rome. Took courage; God moving so many not to be ashamed of his bonds.