Free Walking Tours are the cheapest way to get a guided tour in Poland. These tours are made by non-licensed guides. Usually, they do not require booking and they are executed on convenient hours. You can find them nearly in all the big cities in Poland.
Find some amazing events in Poland and combine your visit with a nice concert or an interesting cultural event that might worth seeing. Find out all the Greek events of Warsaw and Krakow.
Church of Peace, the largest wooden Protestant church inscribed on the World Heritage List of UNESCO. This magnificent timber church was erected between 1656 and 1657. Finished in just 10 months.