Bulgaria is rich in historical monuments and fortresses. However, there are sites that have been shrouded in oblivion for so many years that only a few have had the good fortune to touch them. One of these cultural monuments is the medieval town of Kopsis. Located about 2 km northwest of the town of Sopot, its fortress walls rise majestically above the Strem Valley, reaching a height of 12 m. This is one of the best-preserved fortresses from the period of the Second Bulgarian Kingdom. The place remains almost intact, due to the difficult road to it. In the past, there have been many disputes about where the city known from medieval sources was located, but in the 1980s, research by archaeologist Ivan Dzhambov indicated that the so-called Anevsko Kale is the town of Kopsis. The fortification was located on different levels, with the central citadel located on the top, while other buildings were located on the rest of the territory. The main entrance to the Anevskoto Kale is located on the southern side of the fortification. The central citadel itself was adapted for independent defense. Kopsis is among the best-preserved fortresses in the country. The remains of the fortress walls reach a height of 12 to 14 meters. In the past, the wall enclosed a 5-acre courtyard. Built during the Second Bulgarian Kingdom. According to the Byzantine chroniclers George Pachimer and John Kantakouzenos, the Anevskoto Kale was the capital of the possessions of the brothers Smilets, Voysil and Radoslav. From them we understand that the fortress was of exceptional importance in the years of political separatism in the Second Bulgarian Kingdom, which occurred as a result of Tatar hegemony. At a time when the wealthy boyar families were playing their game of thrones, Kopsis was the residence of the famous family of the Smilets brothers, Radoslav and Voysil, the first of whom even managed to ascend the Bulgarian throne and become king in the period from 1292 to 1298. His reign was marked by Bulgaria's strong dependence on the Tatars. The six years of his reign are not sufficiently illuminated by historical sources. It is known that in 1296 he started a war with Byzantium, which ended in failure for him. The death of Tsar Smilets remains a mystery to historical science. The incredibly beautiful Kopsis fortress is probably a "witness" to many other interesting events, which, however, have not managed to reach us. Fortunately, we still have the opportunity to enjoy what has been preserved, and it is not small at all. Perhaps everyone who loves the romantic atmosphere, history and breathtaking views reminiscent of the movie "The Lord of the Rings" should set aside some of their days off to visit this unique place... In the immediate vicinity of the remains of the fortress is the Sopot Monastery "Ascension of the Lord", you can visit it at any time.