Nikaia is located close to the village of Klos , not far from Bylis . It is an ancient city as well. The city features a protective wall that is notable for its length, 1850 meters, dating back to 425 BCE. The use of polygons and trapezoidal blocks for its construction is typical. Three defensive towers guarded the single entrance to the city. Among the most important archaeological finds are a small theater, a stoa and the ruins of a stadium. The theater had a capacity of approximately 900 spectators.