The oak Grot is considered to be the symbol of Deblin; the name of the town is derived from the word „oak” but also from the many oaks that used to grow there in the past. The oak is related to the XIX century history of the fortress in Dęblin, built by the Russian governor of the Congress Kingdom of Poland. In 1920 the oak was witness to the war of the Polish army led by Józef Piłsudski against the Bolsheviks; a war decisive to the lot of Europe. It is believed that the oak has the power of making wishes come true: you have to put left hand to the bole and say wish in a whisper.