Koniecpol was granted a city charter in 1443. The town was founded in the vicinity of the older settlement of Koniecpol, at a ford on the Pilica River, which was important in terms of communication. The center of Koniecpol is a rectangular from whose corners streets run out at right angles. The layout of the buildings was finally settled only in the nineteenth century. The most interesting monument is the Baroque church of the Holy Trinity located on the north-eastern side of the square.