I lived in Reykjavik at the time of the 2010 eruption of Eyjafjallajökull, and I had a friend with a giant jeep... So we drove to about 500m from the hole in the ground spouting lava (safe, open to the public, quite a few people there) and had the nature experience of a lifetime.

We literally called it the tourist volcano, because you could get so close and still be safe.

http://imgur.com/a/I1qyv

I am going back to Iceland next week for a few days, and my fingers are crossed that Katla and friends can wait until later to erupt.