Agios Vasileios, Achaea

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.

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.

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.

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.

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.

The Rio Castle (Greek: κάστρο του Ρίου), historically known as the Castle of the Morea (Italian: Castello de Morea) in opposition to its counterpart, the Castle of Rumelia at Antirrio, is located at the north tip of the Rio peninsula in Achaea, Greece, at the entrance of the Corinthian Gulf. The Rio-Antirio Bridge is located next to it, and the local ferry docks lie on either side. Today it is used for cultural purposes, especially concerts and is a tourist attraction. The castle was built by the Ottoman Sultan Bayezid II in 1499 above the ruins of an ancient temple of Poseidon, within three months. Along with its twin, the Antirrio Castle, they were intended to protect the entrance to the Corinthian Gulf, and were nicknamed the "Little Dardanelles". The castle is located on the sea shore, with its northern side protected by the sea and the southern by a broad moat, filled with sea water, and two outer bastions (ravelins), linked to the main fort by stone bridges. It has two gates, the central one, facing landwards, and the sea gate. In 1533, it was briefly captured by the Genoese under Andrea Doria, but the Ottomans recaptured it later in the year. In 1687, during the Morean War, it was taken by the Venetians under Francesco Morosini. The Venetians rebuilt the castle, restoring and strengthening it by the addition of towers, giving it its final shape. The Venetians also added the small chapel of the Life-giving Spring (Zoodochos Pege). The Ottomans retook it in 1715, and remained until they surrendered it to French General Nicolas Joseph Maison. Between 1831 and 1912, the castle was used as a military and then civilian prison, whose inmates were often used by the municipality of Patras for cleaning the streets of Rio.

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.

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.

Rio (Greek: Ρίο, Río, formerly Ῥίον, Rhíon; Latin: Rhium) is a town in the suburbs of Patras and a former municipality in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Patras, of which it is a municipal unit. The municipal unit has an area of 98.983 km2. The municipal unit had a population of 14,622 in 2011. The campus of the University of Patras and the Casino Rio is located in Rio.

Rio railway station (Greek: Σιδηροδρομικός Σταθμός Ρίο, romanized: Sidirodromikos Stathmos Ρίο) is a railway station in Rio, a town in the suburbs of Patras in the northwestern Peloponnese, Greece. The station is located just outside the centre of the city, on Piraeus–Patras line and Patras–Kyparissia line and is severed by both Proastiakos Patras Services. Pending the completion of the Athens Airport–Patras railway, it is also the starting point of Hellenic Train bus lines to Aigio, Diakopto and Kiato, where connecting train services to Athens Airport and Piraeus (via Athens central railway station) are available. Diakopto is also the terminus of the unique rack railway to Kalavryta. The station (and the section of line) is currently closed and under reconstruction as part of the construction of the new Athens-Patras railway line, which (when completed) will allow fastener connectivity with Athens. As a result, a new temporary station *with the same name) has been operating since 26 March 2019, at the junction of Zaimi & Iroon Polytechneiou streets (600 m west of the station building), which serves the trains of the Patras suburban train. however the stations café, Rio Rages Cafe, is currently (as of 2022) open).

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.