What a pleasure to be in the middle of nature or in the middle of volcanic rocks in this milky blue lagoon. Cold outside, boiling once in the water, alcoholic (moderately) near the bar area of the pool, but also romantic. The white silica laden mud of the pool is an opportunity to make masks or massage your feet! Tourists and locals meet there, chatting in all simplicity...the Vikings do not lack charm and naturalness. So, yes, it's a classic for any trip to Iceland (the blue lagoon is next to the airport), but what a delight!