Saronic Gulf in the context of Phalerum

Megara (/ˈmɛɡərə/; Greek: Μέγαρα, pronounced [ˈmeɣaɾa]) is a historic town and a municipality in West Attica, Greece. It lies in the northern section of the Isthmus of Corinth opposite the island of Salamis, which belonged to Megara in archaic times, before being taken by Athens. Megara was one of the four districts of Attica, embodied in the four mythic sons of King Pandion II, of whom Nisos was the ruler of Megara. Megara was also a trade port, its people using their ships and wealth as a way to gain leverage on armies of neighboring poleis. Megara specialized in the exportation of wool and other animal products including livestock such as horses. It possessed two harbors, Pagae to the west on the Corinthian Gulf, and Nisaea to the east on the Saronic Gulf of the Aegean Sea. Greek painter Théodore Jacques Ralli created countless paintings featuring the village of Megara between 1873 and 1909.

The Peloponnese, Peloponnesus, or Morea, is a peninsula and geographic region in Southern Greece, and the southernmost region of the Balkans. It is connected to the central part of the country by the Isthmus of Corinth land bridge, which separates the Gulf of Corinth from the Saronic Gulf. From the late Middle Ages until the 19th century, the peninsula was known as the Morea, a name still in colloquial use in its demotic form.

The Saronic Islands or Argo-Saronic Islands is an archipelago in Greece, named after the Saronic Gulf in which they are located, just off the Greek mainland. The main inhabited islands of this group are Salamis, Aegina, Agistri, and Poros. The islands of Hydra and Dokos, which lie off the northeast tip of the Peloponnese (technically between the Saronic Gulf and the Argolic Gulf), are sometimes included as part of the Saronic Islands.

Many mainland Greeks have vacation homes in the Saronic Islands, which are regularly served by ferries from the Athen's port of Piraeus and the Peloponnese. Salamis, the largest island of the group, is where the ancient Greek navy defeated the Persians in the Battle of Salamis in 480 BC.

The Isthmus of Corinth (Greek: Ισθμός της Κορίνθου) is the narrow land bridge which connects the Peloponnese peninsula with the rest of the mainland of Greece, near the city of Corinth. The 6.3 km (3.9 mi) wide Isthmus was known in the ancient world as the landmark separating the Peloponnese from mainland Greece. In the first century AD the geographer Strabo noted a stele on the Isthmus of Corinth, which bore two inscriptions. One towards the East, i.e. towards Megara, reading: "Here is not Peloponnesus, but Ionia" (τάδ᾽ οὐχὶ Πελοπόννησος, ἀλλ᾽ Ἰωνία) and the one towards the West, i.e. towards the Peloponnese: "Here is Peloponnesus, not Ionia" (τάδ᾽ ἐστὶ Πελοπόννησος, οὐκ Ἰωνία); Plutarch ascribed the erection of the stele to the Attic hero Theseus, on his way to Athens.

To the west of the Isthmus is the Gulf of Corinth, and to the east the Saronic Gulf. Since 1893 the Corinth Canal has run through the isthmus, effectively making the Peloponnese an island. Today, two road bridges, two railway bridges and two submersible bridges at both ends of the canal connect the mainland side of the isthmus with the Peloponnese side. Also a military emergency bridge is located at the west end of the canal.

The Myrtoan Sea (also Mirtoan Sea and Myrtoum Mare; Greek: Μυρτώο Πέλαγος, romanized: Mirtóo Pélagos Greek pronunciation: [mirˈto.o ˈpelaɣos]) is a subdivision of the Mediterranean Sea that lies between the Cyclades and Peloponnese. It is described as the part of the Aegean Sea south of Euboea, Attica, and Argolis. Some of the water mass of the Black Sea reaches the Myrtoan Sea, via transport through the Aegean Sea (Saundry, Hogan & Baum 2011).

The Saronic Gulf, the gulf of Athens, lies between the Corinth Canal and the Myrtoan Sea.

Piraeus (/paɪˈriːəs, pɪˈreɪəs/ py-REE-əs, pirr-AY-əs; Greek: Πειραιάς Peiraiás [pireˈas]; Ancient Greek and Katharevousa: Πειραιεύς Peiraieús, Ancient: [peːrai̯eús], Katharevousa: [pireˈefs]) is a port city within the Athens urban area ("Greater Athens"), in the Attica region of Greece. It is located eight kilometres (5 mi) southwest of Athens city centre along the east coast of the Saronic Gulf in the Athens Riviera.

The municipality of Piraeus and four other suburban municipalities form the regional unit of Piraeus, sometimes called the Greater Piraeus area, with a total population of 448,051. At the 2021 census, Piraeus had a population of 168,151 people, making it the fourth largest municipality in Greece and the second largest (after the municipality of Athens) within the Athens urban area.

Salamis (/ˈsæləmɪs/ SAL-ə-miss; Ancient Greek and Katharevousa: Σαλαμίς, romanized: Salamís) or Salamina (Modern Greek: Σαλαμίνα, romanized: Salamína) is the largest Greek island in the Saronic Gulf, about two kilometres (one nautical mile) from the coast of Athens' port of Piraeus and about 16 km (8+1⁄2 nmi) west of Athens center.

The chief city, Salamina, lies in the west-facing core of the crescent on Salamis Bay, which opens into the Saronic Gulf. On the eastern side of the island its main port, Paloukia, connects the island with Perama in the western part of Athens urban area through a frequent ferry line and is the second largest port in Greece in terms of passengers, after the port of Piraeus.

Elefsina (Greek: Ελευσίνα, romanized: Elefsína) or Eleusis (/ɛˈljuːsɪs/ eh-LEW-siss; Ancient Greek: Ἐλευσίς, romanized: Eleusís) is a suburban city and municipality in Athens metropolitan area. It belongs to West Attica regional unit of Greece. It is located in the Thriasio Plain, at the northernmost end of the Saronic Gulf. North of Elefsina are Mandra and Magoula, while Aspropyrgos is to the northeast.

It is the site of the Eleusinian Mysteries and the birthplace of Aeschylus. Today, Elefsina is a major industrial centre, with the largest oil refinery in Greece as well as the home of the Aeschylia Festival, the longest-lived arts event in the Attica Region. On 11 November 2016, Elefsina was named the European Capital of Culture for 2021, which became effective in 2023 due to the COVID-19 pandemic postponement.

Mycenae (/maɪˈsiːniː/ my-SEE-nee; Ancient Greek: Μυκῆναι or Μυκήνη, Mykē̂nai or Mykḗnē) is an archaeological site near Mykines in Argolis, north-eastern Peloponnese, Greece. It is located about 120 kilometres (75 miles) south-west of Athens; 11 kilometres (7 miles) north of Argos; and 48 kilometres (30 miles) south of Corinth. The site is 19 kilometres (12 miles) inland from the Saronic Gulf and built upon a hill rising 274 metres (899 feet) above sea level.

In the second millennium BC, Mycenae was one of the major centres of Greek civilization—a military stronghold which dominated much of southern Greece, Crete, the Cyclades and parts of southwest Anatolia. The period of Greek history from about 1600 BC to about 1100 BC is called Mycenaean in reference to Mycenae. At its peak in 1350 BC, the citadel and lower town had a population of 30,000 and an area of 32 hectares (79 acres).

Nisaea or Nisaia (Ancient Greek: Νίσαια or Νισαία) was the Saronic port town of the ancient polis Megara. In Greek mythology, Nisaea was founded by one of Pandion II's sons, Nisos, who named the region given to him by his father Nisaea, after himself. Control of Nisaea slipped back and forth between Athens and Megara both before and during the Peloponessian War. Athenian allies of the Megarians built long walls which connected Nisaea to Megaris. According to Thucydides, the length of the walls that connected the port to Megara were eight Greek stadia, while Strabo claims the walls to have been 18 stadia in length. A temple of Demeter was located on the road near Nisaea, and a temple of Poseidon located within the port town. Nisaean Megara is thought to have been the birthplace of poet Theognis, but his birthplace is not known for certain The location of the ancient port town remains in debate by historians.

Aegina (/ɪˈdʒaɪnə/; Greek: Αίγινα pronounced [ˈeʝina]; Ancient Greek: Αἴγῑνα) is one of the Saronic Islands of Greece in the Saronic Gulf, 27 km (17 mi) from Athens. Tradition derives the name from Aegina, the mother of the mythological hero Aeacus, who was born on the island and became its king. In classical antiquity Aegina was a powerful city-state and at one point a rival of Athens. In modern times Aegina is known for the temple of Aphaia, pistacho production, and the pilgrimage site of St. Nektarios. Many Athenians have established vacation homes in Aegina.

Agistri, also Angistri or Agkistri (Greek: Αγκίστρι [aɲˈɟistɾi ~ aˈɟistɾi], English: "fishing hook"), is a small populated island and municipality in the Saronic Gulf in the Islands regional unit, Greece.

Poros (Greek: Πόρος; Modern Greek pronunciation: [ˈporos]) is a small Greek island-pair in the southern part of the Saronic Gulf, about 58 km (36 miles; 31 nautical miles) south of the port of Piraeus and separated from the Peloponnese by a 200 m (656 ft) wide sea channel, with the town of Galatas on the mainland across the strait. Its surface area is about 31 square kilometres (12 sq mi) and it has 3,261 inhabitants (2021). The ancient name of Poros was Pogon. Like other ports in the Saronic, it is a popular weekend destination for Athenian travellers.

Poros consists of two islands: Sphaeria (Greek: Σφαιρία, pronounced [sfeˈria]), the southern part, which is of volcanic origin, where today's city is located, and Kalaureia (Greek: Καλαυρία, [kalavˈria]), also Kalavria or Calauria (meaning 'gentle breeze'), the northern and largest part. A bridge connects the two islands over a narrow strait.

The Argolic Gulf (Greek: Αργολικός κόλπος, romanized: Argolikós kólpos), also known as the Gulf of Argolis, is a gulf of the Aegean Sea off the east coast of the Peloponnese, Greece. It is about 50 km long and 30 km wide. Its main port is Nafplio, at its northwestern end. At the entrance to the gulf is the island Spetses. This gulf and its islands are sometimes combined with the Saronic Gulf and Saronic Islands, with the result called the Argo-Saronic Gulf and the Argo-Saronic Islands. It is surrounded by two regional units: Arcadia to the southwest and Argolis to the north and east. The river Inachos drains into the Argolic Gulf near Nea Kios. The main islands in the gulf are Psili, Plateia and Bourtzi, a small island with a Venetian fortress that protects the port of Nafplio. The surrounding mountains protect it from the strong summer Meltemi wind.

The main towns that lie around the gulf are, from southwest to east:

The Battle of Salamis (/ˈsæləmɪs/ SAL-ə-miss) was a naval battle fought in 480 BC, between an alliance of Greek city-states under Themistocles, and the Achaemenid Empire under King Xerxes. It resulted in a victory for the outnumbered Greeks.

The battle was fought in the straits between the mainland and Salamis, an island in the Saronic Gulf near Athens, and marked the high point of the second Persian invasion of Greece. It was arguably the largest naval battle of the ancient world, and marked a turning point in the invasion.

The Corinth Canal (Greek: Διώρυγα της Κορίνθου, romanized: Dioryga tis Korinthou) is a canal in Greece that connects the Gulf of Corinth in the Ionian Sea with the Saronic Gulf in the Aegean Sea. Completed in 1893, it cuts through the narrow Isthmus of Corinth and separates the Peloponnese peninsula from the Greek mainland. The canal was dug through the Isthmus at sea level and has no locks. It is 6.4 kilometres (4 miles) in length and at 24.6 metres (80.7 feet) wide at sea level is impassable for many modern ships. It is currently of little economic importance and is mainly a tourist attraction.

The Corinth canal concept originated with Periander of Corinth in the 7th century BC. Daunted by its enormity, he chose to implement the Diolkos, a land trackway for transporting ships, instead. Construction of a canal finally began under Roman Emperor Nero in 67 AD, using Jewish prisoners captured during the First Jewish–Roman War. However, the project ceased shortly after his death. In subsequent centuries, the idea intrigued figures like Herodes Atticus in the second century and, following their conquest of the Peloponnese in 1687, the Venetians. Despite their interest, neither of them undertook the construction.

Salamis Bay (Greek: Όρμος Σαλαμίνος) is a bay on the west coast of Salamis Island, Greece. It connects with the Saronic Gulf to the west. Its maximum length is approximately 9 km from northeast to west. Cape Petriti forms its southwestern end. The main town of the island, Salamina, is on the northeastern end of the bay. The village Aianteio is on its south coast.

Perama (Greek: Πέραμα) is a coastal town and a suburb of Piraeus and belongs to the Piraeus regional unit and is the southwestern limit of Athens urban area. It lies on the southwest edge of the Aegaleo mountains, on the Saronic Gulf coast. It is 8 km northwest of Piraeus, and 14 km west of the center of Athens. The municipality has an area of 14.729 km. It forms the western terminus of the Port of Piraeus, and there is also a passenger port that provides ferry services to Salamis Island.

The name Perama comes from the Greek word "perasma" which means "passage". Perama has a secondary soccer team named Peramaikos. The Battle of Salamis which took place in 480BC was located between the Salamis island and the mainland, part of which included Perama.