Chrystian Piotr Aigner (1756 in Puławy, Poland – 9 February 1841 in Florence, Italy)
was a Polish architect and theoretician of architecture.
Chrystian Piotr Aigner acquired extensive knowledge of architecture in the course of several journeys to Italy that he made in the company of his patron and subsequent collaborator and friend Stanisław Kostka Potocki. He studied in Italy. Later, during a long association with the city of Warsaw, he created many Classicist buildings in the Polish capital. A member of Rome's Academy of St. Luke, and of the Warsaw Society of Friends of Learning, and from 1817 a professor of architecture at Warsaw University, he was active in Warsaw until 1825 and in Kraków before leaving for Italy for good in 1827.
Aigner at first applied the decorative forms of early Neoclassicism (Marynka's Palace in Puławy) or made reference to the works of Andrea Palladio (the façade of St. Anne's Church in Warsaw). In a later period, he reworked patterns drawn