This is not a photograph, and it's not an oil painting. It might be the most unbelievable watercolor ever made... It's called Sommarnöje, which means something like Summer Delight, and Anders Zorn painted it in 1886. Look at the water, the gentle ripples, the reflections, the wet sheen of it, and then look at the two people, the fine detail of the wooden rowboat, the woman's white dress, the light on her face. It has the near-photographic realism of an oil painting, and it was done in watercolor, a medium so unforgiving that a single wrong stroke ruins the entire piece. Zorn painted this in the first summer of his marriage: the woman in white waiting on the pier is his new wife, Emma, whom he had married only months before. They had just come back from their honeymoon and were staying with her family at Dalarö near Stockholm, still looking for the home where they would spend their life. The man rowing toward her is their friend Carl Gustav Dahlström. It is a real moment from the happiest season of a young couple's life, caught and held forever. In 2010 this single sheet of watercolor sold for twenty-six million Swedish kronor, over three million dollars, the highest price ever paid for a Swedish painting. In his own lifetime, Zorn was celebrated above all for two things: his handling of light, and his ability to paint water. Sommarnöje is where you see exactly why...