BiblePlaces has just released their latest volume 1–2 Corinthians in their Photo Companion to the Bible series. If you preach or teach from these books or are planning to do so in the near future, I would strongly encourage you to check out this resource. There is simply nothing like it or better for illustrating the archaeology and geography related to these epistles. This is a resource created by Bible teachers and preachers for Bible teachers and preachers.
And since it just released it is on sale at about half-off. Go here (scroll to bottom) and use the coupon CHURCH to receive $50 off and pay only $49 for around 2,500 photos, organized by chapter and verse with helpful explanatory notes.
I would also encourage you to check out the other volumes using this link which are also on sale.