First activity for the day was a couple of hours of horse riding on Icelandic horses. They're fairly small, but still move at an impressive pace (too much so for one poor chap, who got thrown off when his horse unexpectedly canteredhe ended on the ground with one foot still attached to the stirrup) and have an extra gear compared to normal European horses.
After that, back to Reykyavík for some culture: the Culture House, the Einar Jónsson sculpture garden and the ASÍ art gallery (which demonstrated that weird-ass conceptual art isn't just confined to the UK). Sadly, it seems that the Phallological Museum is no longer in Reykyavík, so we had to skip that particular bit of culture. (We also tried to get into Hallgrímskirkja, but it was shut for a couple of weddings.)