The works which begin on August 4th and are expected to finish next year, will be the most extensive refurbishment since the museum opened in 1985.
The discovery described by museum staff as "exceptional" was made during conservation work on shoes that make up part of the permanent exhibition at the Auschwitz museum.
The camp became known to the world owing to the film Schindler’s List.
After painstakingly piecing together the provenance of the Lamentation of Christ by the School of Lucas Cranach the Elder, officials said they are now certain that it was stolen from Poland in the wake of World War Two.
The report by Eurostat shows that Poland out-spent countries such as Italy, France, Spain and the UK, proportionally, on cultural services including supporting national monuments, funding for museums, theatres and art programmes.
The photos by prolific photojournalist Władysław Orłowski covering a wide breadth of everyday topics, depicting everything from children playing to fashionable locals quenching their thirst at summertime refreshment stalls, offer a captivating snapshot of everyday life during the PRL period.
Thanks to the renovation visitors can now visit throughout the year.
The Polish Aviation Museum in Kraków has thrown open its doors for some pandemic-dodging virtual tours.
The online-extravaganza will highlight some of the cultural delights of the city.
Aimed at people without the internet and the elderly, the postcards also allow the museum to keep in touch with the local population.