Dům U koulí, Cultural monument in Vnitřní Město, Czech Republic.

Dům U koulí is a cultural monument in Písek's Old Town featuring decorative cannonballs embedded into its facade. These ornamental additions are clearly visible from street level and define the building's appearance.

The house was built as a Renaissance structure in the 16th century and rebuilt in the Neoclassical style in the first half of the 19th century. Parts of the original Renaissance sgraffito plaster were uncovered on the street facade during a renovation in 1993. In the 1950s the house was nationalized, and from 1963 to 2014 it housed a primary art school.

A memorial plaque on the facade marks that the poet Fráňa Šrámek spent his youth in this house. In the courtyard stands a monument to Otakar Ševčík, a violin pedagogue associated with the building.

Dům U koulí stands at Fráni Šrámka 131 in Písek's Vnitřní Město, a short walk from the town walls whose cannonballs gave it its name. The facade faces the street, so the sgrafito plaster and the memorial plaque to Fráňa Šrámek can be seen from the pavement. The building has been in use since 2014 no longer as a school, so visits are limited to the exterior.

The cannonballs set into the front wall were found in the house and its surroundings, close to the town walls, and gave the building its name. Parts of the original Renaissance sgraffito plaster were uncovered on the street facade during the 1993 reconstruction.