My absolute favorite lookout point in Polignano a Mare, this scenic (and iconic) spot offers breathtaking views of the Adriatic Sea (including the famous Lama Monachile Beach) and the old town's cliffside houses.
Note that there are stairs to walk down to get here, and that this is a rocky cliff, so be careful about where you're walking and sitting (and wear proper shoes or sandals).
Visiting off-season is amazing as you can have this spot almost all to yourself (I sat there for over an hour to relish that serene feeling), but even when I visited in the tourist season when it was more crowded, I still enjoyed it, so think it's worth spending some time here no matter when you're here.