A tomb dedicated to Stanisław Kostka Potocki and his wife Aleksandra (nee Lubomirska) Potocka by their son Aleksander. Designed in 1834 by Henryk Marconi and built between 1834-1836 by Jakub Tatarkiewicz and Konstanty Hegl, the mausoleum is made entirely of sandstone. It is located in the park leading to Wilanów Palace and consists of a Neo-Gothic canopy with lions holding shields bearing the crests of the Potocki and Lubomirski families in each corner. On the sarcophagus are the figures of the deceased and around the sides symbols of their virtues and interests are displayed.