Man you guys are way too clever for me. Didn't even do the puzzle, just started looking on the web for a very high lighthouse. Searching led me to one in Mexico which stated it was the 2nd highest, that the highest was in Gibralter but that one's still only 500 something above sea level. I finally gave up thinking that it must be some obscure light way up on top of a mountain somewhere. Should have done the puzzle instead but then I probably still wouldn't have figured out the zips!