The Halászbástya or Fisherman’s Bastion is one of the best known monuments in Budapest, located in the Buda Castle, in the 1st district of Budapest. It is one of the most important tourist attractions due to the unique panorama of Budapest from the Neo-Romanesque lookout terraces. The Fishermen’s Bastion’s main façade, parallel to the Danube, is approximately 140 meters long, of which the southern aisle is about 40 meters long, the north is 65 meters long, and the ornate central parapet is 35 meters long. Its seven high-pitched stone towers symbolize the seven chieftains of the Hungarians who founded Hungary in 895.It was built between 1895 and 1902, in Neo-Romanesque style, on the base of a stretch of the Buda Castle walls, by architect Frigyes Schulek, who was also responsible for the restoration of the Matthias Church. Several historians say that in the Middle Ages this part of the castle walls was protected by the guild of fishermen , who lived under the walls in the so-called Fishtown. Since 1987 it has been part of Budapest’s World Heritage Sites as part of the Várkerület District .

More details: https://en.wikipedia.org/wiki/Fisherman%27s_Bastion