Two Armenian houses shelter the Zamość museum, with intriguing displays such as a scale model of the 16th-century town and a letter to Jan Zamoyski from his architect, Bernardo Morando, with a hand-drawn plan of the square and names of the first occupants of each building. Also on display are archaeological finds, such as Gothic treasures from cemeteries in the Hrubieszów Valley.
Originally, all of the houses in the square were topped with decorative parapets, but these were removed in the 1820s; only those on the northern side have been (and still are being) restored. As these houses once belonged to Armenian merchants, you will find some distinctive motifs on their facades.