Feast of St. John the Baptist/Kupała's Night

Feast of St. John the Baptist, also named as Kupała's Night, is a very old festival. It was celebrated before Christianity. After 966 it was declared that this festival is forbidden, because it is a Paganism festival. But still people celebrated it. Then they changed their way of thinking and declared that it is an official catholic festival and it name's "St. John's Eve" ("Noc świętojańska").

In this day you should light a bonfire and jump across it - because of that you will be rid of bad ghost and it covers you from bad luck. Girls were doing wreaths of flowers and let it on a river. 

Nowadays it is still celebrating. For example, in Poznań people sent in a sky Chinese lantern (now fire departament said that it is too dangerous). 

In my opinion it is a nice festival and we should remember of old Slavs believes ;)