1566 a new town hall was built, and in 1568 a canal was completed, which connected the man-made lake Czartoria with the Nida river. In 1589, a weapon manufacturer was opened in Nowy Korczyn, producing gunpowder, cannons and rifles. The importance of the town diminished in the early 17th century, after the capital of the Commonwealth was moved from Kraków to Warsaw. In 1606, during the Zebrzydowski Rebellion, Korczyn was ransacked by the rebels, and in 1607, almost whole town with its 266 houses burned in a fire. Further and complete destruction came during the Swedish invasion of Poland, when in 1657 the town was burned to the ground, together with its extensive archives. In 1702, during the Great Northern War, Swedish troops destroyed Korczyn once again, and the town never recovered since then. After the Partitions of Poland, Nowy Korczyn briefly belonged to the Austrian Empire, and since 1815, it became part of Russian-controlled Congress Poland. Nowy Korczyn burned in 1811, 1855 and 1857, the town was also frequently flooded both by the Vistula and the Nida. In 1860, Nowy Korczyn had the population of 3,319, including 2,370 Jews. In 1869 Russian authorities stripped it of the town charter. In September 1914, Nowy Korczyn was the area where Polish Legions operated. Here the headquarters of Józef Piłsudski was briefly stationed, and after the war, the village belonged to Kielce Voivodeship. In the Second Polish Republic it remained a poor village, with a significant Jewish population. In 1942, the Jews of Nowy Korczyn were deported to and murder in Treblinka. Concerning the deportation of the Jews of Nowy Korczyn, a witness stated the following: "In the night of November 2. in 1942 Nowy Korczyn was surrounded by the German military and two Ukrainian units. The Jews of the town were chased to the town square - or rather a market place in the centre of the town. There could have been 2000 Jews or 3000 or more, I don't know, different figures are mentioned. However, all the Jews of Nowy Korczyn were deported [...]". In 1944, during Operation Tempest, units of the Home Army attacked German police post in Nowy Korczyn. The synagogue of Nowy Korczyn has been under preservation since 2014. Transport Nowy Korczyn does not have a train station. The village is located at the intersection of National Road Nr 79 (Warsaw - Bytom), and local road nr.