Neoclassical architecture in Poland was centered on Warsaw under the reign of Stanisław August Poniatowski, while the modern concept of a single capital city was to some extent inapplicable in the decentralized Polish–Lithuanian Commonwealth.
[4] The best-known architects and artists who worked in Poland were Dominik Merlini, Jan Chrystian Kamsetzer, Szymon Bogumił Zug, Stanisław Zawadzki, Efraim Szreger, Antonio Corazzi, Jakub Kubicki, Hilary Szpilowski, Christian Piotr Aigner, Wawrzyniec Gucewicz, Bonifacy Witkowski and Danish Bertel Thorvaldsen.
Among the most notable works by Szymon Bogumił Zug is a palace in Natolin and Holy Trinity Church and gardens: Solec, Powązki, Mokotów and Arcadia near Nieborów.
From the period of the Congress Kingdom are Koniecpolski Palace and the St. Alexander's Church, Warsaw, the Temple of the Sibyl in Puławy, rebuilding the Łańcut Castle.
The notable town halls in Łowicz, Płock, Błonie, Konin and Aleksandrów Łódzki are dating back the first half of the nineteenth century.