- Politsas bridge:
Near the modern bridge, linking Ambelohori with Fortosi of the Katsanihoria, the Politsa bridge until recently linked the Katsanohoria with Tzoumerka. Below the bridge the Arahthos torrent triumphantly enters the famous ravine. The well hewn stones, the stable butresses, the solid foundation on the nearby rocks betray a deep knowledge of their trade and the skill of the builders of Ambelohori who constructed it. The date of construction is not known. The date of its renovation at the expense of I. Loulis is 1874.
* architecture, bridge, the artisans of Tzoumerka
- Plaka bridge:
One of the most beautiful Greek bridges, linked to the economic and historical history of the region and the fate of the modern Greek state. Its fate was similar as, though of course, less tragic than, the fate of Arta bridge. The reason being the untamable Arahthos that fiercely resists any attempt to bridge it. In 1860 the bridge collapsed because the waters of the Arahthos moved the rock on which it was founded. In 1863 the team of master-Giorgos of Konitsa undertook the reconstruction of the bridge, the main donor being I. Loulis from Aetorahi of Katsanohoria. The day of the opening while the craftsmen and residents celebrated the event, the bridge collapsed. Unmoved, they collected the money and with the help of I. Loulis assigned master-Kostas Bekas of Pramanta with the construction of a new bridge. Starting on July 186 the team worked feverously. In September the work was complete an arch, with a height of 19.70 metres, an imposing charm and triumphant opening of 40 metres seemed to have finally tamed wild nature. Early rains came to shake the confidence of the craftsmen. They sought to remove the scaffolding. The bridge slightly inclined, however, its statics were unaffected. The people of Tzoumerka did not enjoy the use of the bridge for long. In 1881 the area west of Arahthos was annexed to Greece. The bridge was on the border of Greece with Turkey. Customs posts and barracks made the movement of people and products difficult. Tzoumerka was isolated again until 1913, when they were incorporated in the Greek state. In 1944 on the Plaka bridge ELAS and EDES (partisan forces that opposed the German occupation) signed a peace agreement. The terms of the agreement were not kept. In a similar fashion the civil war of 1945-1949 began.
* architecture, bridge, history, team of craftsmen of Tzoumerka, Kostas Bekas
- The building complex of the Klifkis water mill in the Municipal Department of Kalentzi, at the meeting of the torrents Bisdenis and Arahthos has been declared a historic listed monument.
- The water mill of Zeko, on the shore of the torrent of the same name, a kilometre out of Aetorahi.
- The water mills of Vrania (on the torrent of the same name below Tsouka) and Mantelis at Elliniko.
- The water mill at the Bisdenis location of Korytiani.
- The water mill at the central square of Platanousa.
At the central square of Lazaina. The fountains Bouhni, Aghios Vlasios, Stelaki, Vlahioti, and Katsiouli at Elliniko. Tsoutsoura and Aghios Nicholaos (sheltered and built in 1815) in Korytiani. Lagadi-Sgourolakos in the central square of Pigadia. The Ploumi fountain near Panagoula church of Plaisia. The Montsara and Letsi fountains, and the fountain on the central square of Platanousa.
The fountains of Tzilia and Radosta at Kalentzi. The fountains at the forest of Ai Yiannis and on the plain south of Plaisia. A system of 5 stone fountains at Kostitsi, two at Patero and 4 at Fortosi.
- At Lazaina near Aetorahi.
- At the threshing-floor location a system of 3 other threshing-fields at Korytiani.
- At Aghios Dimitrios of Plaisio
- Three at Patero, 5 Kostitsi and 3 at Fortosi
HIGH ALTITUDE LANDSCAPES:
- Aetorahi, Kostitsi, Patero, Xirovouni