What to see in Iceland in 5 days?

I will be spending several days in Iceland, namely five. I have never been there before and I would like to know what the places of interest are in Iceland. What do you have to suggest. What to see in Iceland in 5 days? I would really appreciate your help, thank you very much!

It's a pity most visitors don't drift far from the capital, as some of the most memorable sights of Iceland are further a field. There are numerous excursions offered by tour companies and are readily available from any of the main centers such as Reykjavík and Akureyri. They will fly you around and take you on to the glaciers and to the big volcanoes for a rational price. Be sure to visit Blue Lagoon, a famous outdoor pool and health center. The spa is located in Grindavík on the Reykjanes Peninsula. It is positioned approximately 13 km from the Keflavík International Airport. This geothermal spa in the middle of a magma field and with its milky blue water is very dreamlike.