the beaches in warsaw began to be popular with sunbathing during the interwar period of the 20th century. in around the miedzeszyński embankment ("wał miedzeszyński") functioned a popular beach area, this included the beach of the kozłowski brothers ("plaża braci kozłowskich") and the "poniatówka" urban beach - both of which had wooden pavilions and changing rooms. the modern functional beaches in warsaw were featured in "national geographic"'s "top urban beaches in the world".