As an ancient city with a long history, Nishi has many places of interest and monuments, which is a good place to explore history. Built in 1723, Nishi Castle is the most complete Turkish castle in the Balkans. Under the castle is the ancient city of Rome, which is flooded by history. It is a disaster and difficult ancient city, and there are some ruins that are very bloody, such as the Red Cross concentration camp and the largest number of people in Europe in World War II. Pit, etc., because Serbia is in the connection between Asia and Europe, historically is a must-see place for soldiers, so Serbia is full of castles, and the city walls are tall and thick, much thicker than the city walls seen in other countries, and the local protection of historical buildings seems not too concerned. The graffiti in many places is very serious. It is a pity that standing on the top of the city wall can overlook the city. There is also a dome of the Turkish bathroom under the city wall. The city wall and ruins are now converted into a fashion restaurant. There are many tourists. The entrance to the dungeon on the top of the city wall is open and dark. No entry to visit.