Ano Kastritsi

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.

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.

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.

Skioessa (Greek: Σκιόεσσα, meaning "umbrageous") is a neighbourhood and a settlement in the northeastern part of the city of Patras. Skioessa had a population of 526 for the settlement. Skioessa is located 5 km from downtown Patras, about 5 km southeast of Rio, about 37 km west of Aigio and 2 km east of the GR-8/E55 (Athens - Corinth - Patras and Aretha Street. The previous name of this suburb, Voudeni, is still in use.

Arachovitika (Greek: Αραχωβίτικα) is a village and a community in the municipal unit of Rio in the northern part of Achaea, Greece. It is situated on the Gulf of Corinth, 1 km northwest of Drepano and 6 km northeast of Rio. The Greek National Road 8A (Patras - Corinth) passes south of the village, and the railway Patras - Corinth runs through the village. The community consists of the villages Arachovitika and Kato Arachovitika. There is a port next to Cape Drepano.

The University of Patras (UPatras; Greek: Πανεπιστήμιο Πατρών, Panepistímio Patrón) is a public university in Patras, Greece. It is the third-largest university in Greece with respect to the size of the student body, the staff, and the number of departments.The University of Patras is considered one of the top-ranked universities in Greece and has been placed in the top 200 universities in subject areas.In 2019, the student population was more than 33,000 (29,901 at the undergraduate level and 3,931 at the postgraduate level). It has 715 faculty members, 234 scientific staff members and 429 administrative personnel and comprises seven schools and thirty-one departments.

Sella (Greek: Σελλά) is a village in the municipal unit of Rio, Achaea, Greece. It is located in the northern foothills of the Panachaiko, at 500 m above sea level. The river Volinaios flows east and north of the village. It is 2 km east of Argyra and 9 km east of Rio. In 2011, it had a population of 302.

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.

Elekistra (Greek: Ελεκίστρα, also Ελικίστρα) is a village and a community in the municipality of Patras, Achaea, Greece. It is situated in the foothills of the Panachaiko mountain, southeast of the built-up area of Patras, about 7 km from the city centre. The community consists of the villages Elekistra, Karya, Pournarokastro, Ryaki and Romanos. In 2011 Elekistra had a population of 275 for the village and 1,538 for the community.

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.