Arachovitika

Panormus or Panormos (Ancient Greek: Πάνορμος) was a harbour of ancient Achaea, 15 stadia east of the promontory of Rhium. During the Peloponnesian War, it was at Panormus, in 429 BCE, that the Spartan fleet and infantry united prior to the Battle of Naupactus.Its site is located near the modern Tekes.

Agios Vasileios (Greek: Άγιος Βασίλειος) is a coastal village in the municipal unit of Rio, in the municipality of Patras. It is located on the Gulf of Corinth, 3 km northeast of Rio, Greece. The Greek National Road 8A (Patras - Corinth) passes south of the village.

Drepano, (Greek: Δρέπανο) is a village in the municipality of Patras, Achaea, Greece. In 2011, it had a population of 541. It is situated on the river Volinaios, about 60 m above sea level. It is 2 km west of Psathopyrgos and 7 km northwest of Rio. The Greek National Road 8A (Athens - Corinth - Patras) passes north of the village.

Platani (Greek: Πλατάνι) is a village in the municipal unit of Rio, Achaea, Greece. In 2011, it had a population of 481. It is situated in the northern foothills of the Panachaiko mountain. It is 4 km east of Rio, and 2 km south of Agios Vasileios.

Psathopyrgos (Greek: Ψαθόπυργος) is a tourist village and community in the municipal unit of Rio in the northern part of Achaea, Greece. Psathopyrgos is located on the Gulf of Corinth, south east of Cape Drepano, the northernmost point of the Peloponnese peninsula. The village has a small pebble beach and it is known to the locals and tourists for its fish taverns and nice views of the green mountains south of the village. It is located 2 km north east of Drepano and 9 km north east of Rio. The Greek National Road 8A (Patras - Aigio - Corinth) pass south of the village. In the new railway line Athens-Corinth-Patras, which is currently under construction (June 2018), a railway stop is planned. The community Psathopyrgos consists of the villages Psathopyrgos and Kato Rodini.

Volinaios (Greek: Βολιναίος, also Δρεπανέικο Drepaneiko, Latin: Bolinaeus) is a river in the northern part of Achaea, Greece. It empties into the Gulf of Corinth. The river is named after the ancient town of Boline. The river begins in the northern part of the Panachaiko mountains, it flows through the village Drepano where it has water all year round. The river flows into the Gulf of Corinth near Psathopyrgos.

Selemnos (Ancient Greek: Σέλεμνος, Latin: Selemnus) is a river in the northern part of Achaea, Greece. The river flows entirely in the municipal unit of Rio and empties into the Gulf of Corinth.

University General Hospital of Patras (Greek: Πανεπιστημιακό Γενικό Νοσοκομείο Πατρών), is a public general Hospital located next to the University of Patras in Rio, Greece, just few kilometers away from the city of Patras.The construction of the hospital was completed in 1988 and a few months later it began operation. It is part of the ESY (Greek: ΕΣΥ - Εθνικό Σύστημα Υγείας), the National Healthcare System of Greece. It was renamed General University Hospital of Patras - All Holy Theotokos the Helper (Greek: Πανεπιστημιακό Γενικό Νοσοκομείο Πατρών Παναγία η Βοήθεια) in July 2009. The hospital is affiliated with the University of Patras. It is teaching facility of University of Patras' School of Medicine and has earned a reputation as a respected medical center. With a capacity of 800 beds and an area of 75,000 sq. m. it is the largest Hospital in the region of Peloponnese and one of the largest hospitals in Greece with over 10,000 operations performed, and over 300,000 cases handled each year.

Kato Kastritsi (Greek: Κάτω Καστρίτσι) is a village and a community in the municipal unit of Rio, Achaea, Greece. The community consists of the villages Kato Kastritsi and Magoula. It is situated at about 100 m elevation in the northwestern foothills of the Panachaiko, 2 km southeast of Rio town centre, and adjacent to the campus of the University of Patras. Ano Kastritsi is 4 km to the southeast.

Argyra (Greek: Αργυρά) is a village in the municipal unit of Rio, Achaea, Greece. It is situated in the northern foothills of the Panachaiko, at about 450 m elevation. It is 2 km west of Sella and 7 km east of Rio. In 2011, it had a population of 288. A wind energy facility has been built about 4 km to the south.

Ano Kastritsi (Greek: Άνω Καστρίτσι) is a village in the municipal unit of Rio, Achaea, Greece. It is situated at about 500 m elevation in the forested northwestern foothills of the Panachaiko, 6 km southeast of Rio town centre, Kato Kastritsi is 4 km to the northwest. It is known for the views to the east part of Patras, the Corinthian Gulf, the Rio-Antirio Bridge, and for its taverns and food.

The Battle of Rhium (429 BC) or the battle of Chalcis was a naval battle in the Peloponnesian War between an Athenian fleet commanded by Phormio and a Peloponnesian fleet composed of contingents from various states, each with its own commander. The battle came about when the Peloponnesian fleet, numbering 47 triremes, attempted to cross over to the northern shore of the Gulf of Patras to attack Acarnania in support of an offensive in northwestern Greece; Phormio's fleet attacked the Peloponnesians while they were making the crossing. In the battle, the Peloponnesian ships, hampered by the fact that many of them were equipped not as fighting vessels but as transports, circled together in a defensive posture. Phormio, taking advantage of his crews' superior seamanship, sailed around the clustered Peloponnesians with his ships, driving the Peloponnesians closer and closer together until they began to foul oars and collide with each other. The Athenians then suddenly attacked, routing the Peloponnesians and capturing 12 ships.