The Hipolit House is named after an Italian merchant family, the Hipolits, who owned it in the 17th century. The building has a 14th-century metre; it represents the so-called kamienica Krakowska ('Kraków tenement house') type. The tenement house was built on a relatively wide and shallow plot, unlike most houses around the city square. Its facade was once covered with sgraffito that created a contrasting two-tone pattern on the plaster. Original elements have survived to this day: stone portals from the end of the 14th century, Baroque stucco vault by Baltazar Fontana, polychrome ceilings, inlaid doors, ceiling friezes, beautiful 19th-century stoves, and 17th-century wooden galleries around the annexe. The Hipolit House branch of the Museum of Kraków was opened in 2003. It houses a permanent exhibition that shows the conditions in which people used to live. You can see interiors from the 17th to the 19th century. The Hipolit house, together with the entire Kraków urban complex was designated a UNESCO World Heritage Site in 1978.