The Ciecierski Palace in Mordy is a Baroque residence from the first half of the 18th century, built on the site of an earlier defensive manor house. Located in the town of Mordy, about 20 km east of Siedlce, it is surrounded by a vast landscape park with rare species of trees, such as the American tulip tree and the Canadian hemlock. Currently, the palace is in ruins, but renovation works are planned to restore it to its former glory.