Not earlier than 24.10. - not later than 28.10.1820
Probably visits the place where the Kościuszko Mound in Kraków was built.
Paweł Maliński’s travel journal, entry dated 23.10.1820 (documents that Thorvaldsen did not arrive ików from Warszawa until 23.10.1820 and therefore cannot have attended the inauguration ceremony for the Kościuszko Mound 16.10.1820).
Newspaper report dated 30.9.1820 in Dagen (mentions the building of the mound but not Thorvaldsen’s visit).
Mieczysław Rokosz: A Memento from the Kościuszko Mound. Guidebook for Visitors, Kraków 2007, p. 24 (claims that Thorvaldsen attended the ceremony 16.10.1820, when the building of the mound was begun. However, that is not possible as Thorvaldsen was in Warszawa that day and did not arrive Kraków until 23.10.1820. The same claim is made by planchetekster from the place itself. Thorvaldsen probably visited the place some days after his arrival in Kraków).