Nicopolis ad Istrum was a Roman and Early Byzantine town. It was founded by the Roman Emperor Trajan after his victories over the Dacians in 101 and 106. It was built over an area of 30 hectares and is surrounded by fortress walls. The villas the craftsmen's workshops and necropolises are to be found outside the walls. The town was planned according to the orthogonal system. The network of streets, the forum surrounded by an Ionic colonnade and many buildings, a two-nave room later turned into a basilica and other public buildings have been uncovered in this town.
The rich architectures and sculptures show a similarity with those of the ancient towns in Asia. Nicopolis ad Istrum minted its own coins - 900 different emissions for one century, bearing images of its own public buildings. It was an episcopal centre during the early Byzantine period and was destroyed b the Avar invasions at the end of the 6th century. A Bulgarian medieval settlement arose upon its ruins later (10-14th century).
Nicopolis ad Istrum is an important site and is visited by thousands of Bulgarian and foreign tourists and many specialists. It has been declared a monument of culture and scrupulous care is taken of further excavations, investigation and popularization.
The site was placed on the Tentative List for consideration as a World Heritage Site by UNESCO in 1984.
References:The Château de Chantilly comprises two attached buildings: the Petit Château built around 1560 for Anne de Montmorency, and the Grand Château, which was destroyed during the French Revolution and rebuilt in the 1870s. Owned by the Institut de France, the château houses the Musée Condé. It is one of the finest art galleries in France and is open to the public.
The estate"s connection with the Montmorency family began in 1484. The first mansion (now replaced by the Grand Château) was built in 1528–1531 for the Constable Anne de Montmorency by Pierre Chambiges. The Petit Château was also built for him, around 1560, probably by Jean Bullant. In 1632, after the death of Henri II, it passed to the Grand Condé who inherited it through his mother, Charlotte Marguerite de Montmorency.
Several interesting pieces of history are associated with the château during the 17th century.