The Corinth Canal connects the Gulf of Corinth with the Saronic Gulf in the Aegean Sea. It cuts through the narrow Isthmus of Corinth and separates the Peloponnese from the Greek mainland, arguably making the peninsula an island. The canal was dug through the Isthmus at sea level and has no locks. It is 6.4 kilometres (4 mi) in length and only 21.4 metres (70 ft) wide at its base, making it impassable for most modern ships. Nowadays it has little economic importance and is mainly a tourist attraction. The canal was initially proposed in classical times and a failed effort was made to build it in the 1st century AD.Construction recommenced in 1881 but was hampered by geological and financial problems that bankrupted the original builders. It was completed in 1893 but, due to the canal's narrowness, navigational problems and periodic closures to repair landslides from its steep walls, it failed to attract the level of traffic expected by its operators.

Corinth was a city-state (polis ) on the Isthmus of Corinth, the narrow stretch of land that joins the Peloponnese to the mainland of Greece, roughly halfway between Athens and Sparta.Since 1896, systematic archaeological investigations of the Corinth Excavations by the American School of Classical Studies at Athens have revealed large parts of the ancient city, and recent excavations conducted by the Greek Ministry of Culture have brought to light important new facets of antiquity. For Christians, Corinth is well known from the two letters of Saint Paul in the New Testament, First and Second Corinthians. Corinth is also mentioned in the Acts of the Apostles as part of the Paul the Apostle's missionary travels. In addition, the second book of Pausanias' Description of Greece is devoted to Corinth. Ancient Corinth was one of the largest and most important cities of Greece, with a population of 90,000 in 400 BC.The Romans demolished Corinth in 146 BC, built a new city in its place in 44 BC, and later made it the provincial capital of Greece.

The Rio–Antirrio Bridge,officially the Charilaos Trikoupis Bridge, is one of the world's longest multi-span cable-stayed bridges and longest of the fully suspended type. It crosses the Gulf of Corinth near Patras, linking the town of Rio on the Peloponnese peninsula to Antirrio on mainland Greece by road. It opened one day before the Athens 2004 Summer Olympics, on 12 August 2004, and was used to transport the Olympic Flame

Achaia Clauss is a Greek winery located in Patras in the Peloponnese. It was founded in 1861 by the Bavarian Gustav Clauss. It is most famous for its fortified red wine, Mavrodaphne. In 1859, Gustav Clauss, a representative of the Bavarian company Fels and Co., purchased an area of 60 acres of land from the landowner George Kostakis in Riganokampos in Patras at an altitude of 500 meters. His initial interest was in blackcurrants.Through the years many important people have visited Achaia Clauss: Eleutherios Venizelos,empress Sissy of Austria, General Montgomery, Alexander Fleming,Aristotelis Onassis, Omar Sharif, King Gustav Adolf of Sweden, Kings George I, Konstantinos I and George II of Greece, Queen Alexandra of Great Britain, Queen Louise of Sweden, Queens Olga and Sofia of Greece, princess Marie Bonaparte of Greece and Denmark, Nadia Comaneci.

In western Peloponnese, in the beautiful valley of the Alpheios river, lies the most celebrated sanctuary of ancient Greece. Dedicated to Zeus, the father of the gods, it sprawls over the southwest foot of Mount Kronios, at the confluence of the Alpheios and the Kladeos rivers, in a lush, green landscape. Although secluded near the west coast of the Peloponnese, Olympia became the most important religious and athletic centre in Greece. Its fame rests upon the Olympic Games, the greatest national festival and a highly prestigious one world-wide, which was held every four years to honour Zeus.In 776 BC, Iphitos, king of Elis, Kleosthenes of Pisa and Lykourgos of Sparta reorganized the Olympic Games in honour of Zeus and instituted the sacred ekecheiria, or truce. Soon the quadrennial festival acquired a national character. The great development of the sanctuary began in the Archaic period as shown by the thousands of votive offerings - weapons, figurines, cauldrons etc - dating from this period. This is when the first monumental buildings were constructed - the temple of Hera, the Prytaneion, the Bouleuterion, the treasuries and the first stadium. The sanctuary continued to flourish into the Classical period, when the enormous temple of Zeus (470-456 BC) and several other buildings (baths, stoas, treasuries) were erected, and the stadium moved to the east of its Archaic predecessors, outside the Altis. The countless statues and precious offerings of this period were unfortunately lost, as the sanctuary was pillaged several times in antiquity and especially under Roman rule. In the Hellenistic period the construction of lay buildings, such as the gymnasium and palaestra, continued, while in Roman times several existing buildings were refurbished and new ones built, including hot baths, luxurious mansions and an aqueduct.