Summer in Iceland was an experience, we went around solstice and the sky was never dark. You get sunset around midnight but the sky is still bright. It was the first time I sleep with an eyes mask on. I occasionally fall asleep when the sun comes out, thought I could manage sleeping under bright light. 3 days in I was really glad that I took the eyes mask they were giving away on my flight to Iceland. Iceland was definitely one of its kind, I enjoyed every moment I spent there, definitely looking forward to head back again.