Iceland is great for whale watching because the cold waters have diverse marine life. In summer the shores become a feeding ground for multiple species of large marine mammals, allowing for a chance to observe these whales in their natural habitat.
We went on the Reykjavik Sailors whale watching tour. We were out for about 3 hours and saw 3 whales - it was really cool - something I will do again and hope to see breaching or pods.
They call it Þúfa. When we were leaving the harbor we saw this grassy mound and of course we had to check it out when we were back on land. It was commissioned by a fish company and created by a local woman artist, Ólöf Nordal. The path winds around and you ascend to the top. That little house on top has dried fish in it - I guess that's your reward??? Regardless - this is one quirky, cool art piece - who knew Reykjavik was so filled with amazing and very accessable art.