The heritage of the region includes numerous landmarks, especially manor houses built by the nobility in largely in the 18th and the 19th centuries. Those include Prandau-Normann and Prandau-Mailath manor houses in Valpovo and Donji Miholjac respectively, manor houses in Baranja—in Bilje, at a former Esterházy estate in Darda, in Tikveš, and in Kneževo. Pejačevićs built several residences, the most representative ones among them being manor house in Virovitica and the Pejačević manor house in Našice. Further east, along the Danube, there are Odescalchi manor house in Ilok, and Eltz manor house in Vukovar—the latter sustained extensive damage during the Battle of Vukovar in 1991, but it was reconstructed by 2011. In the southeast of the region, the most prominent are Kutjevo Jesuit manor house, and Cernik manor house, located in Kutjevo and Cernik respectively. The period also saw construction of Tvrđa and Brod fortifications in Osijek and Slavonski Brod. Older, medieval fortifications are preserved only as ruins—the largest among those being Ružica Castle near Orahovica. Another landmark dating to the 19th century is the Đakovo Cathedral—hailed by the Pope John XXIII as the most beautiful church situated between Venice and Istanbul.