Gulfoss waterfall.
Strokkur geyser, it goes off about every five minutes.
The larger Geysir no longer functions since tourists kept throwing
rocks and dirt into it to set it off and clogged it up. It's now
set off artifically once a year with a soap solution.
The Blue Lagoon, a pool created from the outflow of a
geothermal plant. The water is filled with sulfur and other minerals and
is about 85 to 90 degrees.
An area at the Mid-Atlantic rift.