ამსტერდამი

As you know, Amsterdam is located below sea level and is protected from it by a dam. According to legend, one day the sea found a small hole in the stone, which could grow under the pressure of the water mass, and then goodbye to both the dam and the beautiful city. But this threat was noticed by a boy passing by and was not taken aback - plugging the hole with his finger, he began to call for help. The city was saved!