Besides Kastro, the most important archaeological sites of Kythnos include Vryokastro, the ancient 10th century B.C. capital on the norteastern coast. There are the remains of some walls and towers and two Hellenistic temples. Little remains of the ancient site of Kastellas but the site of Maroulas, perhaps the oldest site in the Cyclades, has the remains of some buildings from the 8th and 7th Century B.C.
Following the road past Messenikolas one arrives at the picturesque village of Morfovouni (aka Vounessi), 18 kilometres southwest of Karditsa. Two kilometres east of the village at the Paleokastro locality is an archaeological preserve containing the ruins of ancient walls.
Portitsa is a village near Metropoli, 12 km from Karditsa. The limestone peak of Vimberotripa at an elevation of 762 metres is a site of well-preserved walls of an ancient acropolis, with full view towards the plains of Thessaly.
Mitropoli, the capital of the municipality by the same name, is about 9 km from Kardista. An ancient temple dedicated to Apollo was recently discovered at the area called Lianokokkalo.
At an altitude of 900 meters, Rentina (pronounced Redina or Rendina) reveals walls of ancient prehistoric settlements that have been found in the area, as well as graves dating from the 4th and 3rd centuries BC.
Near the village of Neraida in the municipality of Itamos, the new village of Sanrataporos reveals sites with ancient artefacts and graves that have been found in the vicinity. There are also walls of an ancient city located on the flood plains of the river Megdova.
Kedros is a village rich in history and archaeological tradition. In the woods of Saint Nikolaos, 2 km northwest of the village, the ruins of the ancient city of Orthi were discovered. Old coins, the entrance of a fortified wall to the city, and the ancient cemetery have also been found.
The village of Neraida lies 41 km from Karditsa and is part of Itamo municipality. Around the village area, sites with ancient artefacts and graves have been located.
The village of Porti, six kilometres northwest of Mouzaki was referred to by the ancient author Polyvio as the settlement of Akron, featuring an army bastion of the Athamanon king, Aminandro. At the site of Paleokastro, remnants of ancient walls of archaeological interest are still present.
Xinoneri is part of the Mitropoli region, lies 8 km from Karditsa. A Mycenaean tomb of almost 14 square km was discovered on a hill between Xinoneri and neighbouring Agios Giorgios. Ongoing archaeological excavations will undoubtedly render this site more important.