Children sled at the snow-covered Grueneburg Park in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)
A woman walks past the snow-covered Goethe Plaza in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)
A man with a child stands on the Eiserner Steg footbridge amid snow in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)
People play soccer at the snow-covered Grueneburg Park in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)
People paddle along the Main River in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)
People take selfies at the snow-covered Grueneburg Park in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)