Recently, Europe's largest dance festival, the St. Petersburg ball of the 21st century, died down on the forts of Kronstadt. In 1842, from the dark waters of the Gulf of Finland, 240 meters from... Recently, Europe's largest dance festival, the St. Petersburg ball of the 21st century, has died down on the forts of Kronstadt. IN In the 19th century, they preferred to bypass this place, or rather, swim around.