An important centre of Calvinism during the Renaissance and of Hasidic Judaism in the 19th c. It has well-preserved urban architecture typical of a commercial town with two showpieces from the second half of the 18th c. – the Parish Church of Assumption of Our Lady and the palace with a sentimental landscape park – both founded by Princess Anna Jabłonowska and designed by Szymon Bogumił Zug in the Classicist style. In the beginning of October 1939 a long battle took place near Kock between Polish soldiers from the ‘Polesie’ Independent Operational Group and the German army. The memory of the brave patriots is cherished at the Kock cemetery, where many of them are buried. There stands a monument to General Franciszek Kleeberg, the leader of the Polesie Group.