Indicative rates, not an offer. Averaged from real buy and sell prices.
The Polish zloty (PLN) is the national currency. Euros, US dollars and British pounds are exchanged most often, as are Ukrainian hryvnias and Czech korunas. Warsaw and Kraków have the most offers, with more in Wrocław, Gdańsk, Poznań and Łódź.
Private exchange offices (kantor) are found in almost every town and usually beat bank rates, while airport rates are the worst. P2P offers let you swap USDT or USDC for zlotys in cash or by transfer.
Below are exchange offices from open sources.