A dancer performs during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021. (Photos: Xinhua)

Women wearing traditional floral wreaths gather during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021.

A dancer performs during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021.

Dancers perform during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021.

A boat carrying a large floral wreath is seen during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021.

People gather during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021.

Women wearing traditional floral wreaths gather during the summer solstice celebrations in Warsaw, Poland, on June 26, 2021.