Blue Grotto, Capri, Italy
 

We fell for it and let them paddle and serenade us in the gondola boat inside the cave to see the blue light reflection. Okay it was pretty for the few seconds we got to see it. But the boat paddlers/singers expect to be tipped on top of the fee charged to get into the boat.

Had fun watching the larger boats unload senior citizen tourists into the small gondola type boats after our turn was finished.