Wikipedia:

Midsummer Dance is an 1897 oil on canvas painting by the Swedish artist Anders Zorn. There are three versions of the painting; the most well-known one is exhibited at Nationalmuseum in Stockholm. Another version, painted at the same time, is now exhibited at the Pushkin Museum in Moscow. A third version, commissioned by an American collector in 1903, is in a smaller format (117.5 x 90) and in private ownership.

The painting depicts a traditional Swedish Midsummer celebration in the province of Dalarna. In the background to the right there is a maypole with a Swedish flag at the top. The dancers are all wearing folk costumes. In the House with a red gable the first morning light is reflected.