Go kayaking (or canoeing) at night in the bioluminescent bay in Puerto Rico. It literally glows at night. go off the main island, if you go out of the bay it's a beach that you can only get to by kayak or swimming.
Stone bridge optical illusion in New York. This image is an example of reflective imagery in photography. I like this illusion of a complete group of circles, instead of the reality of the group being a selection of cleverly placed bridges over water.