The Isthmus of Corinth is a narrow strip of land that connects Central Greece with the Peloponnese , while the canal that has been opened in it connects the Saronic Gulf with the Gulf of Corinth . It is about 6 kilometers long and the narrowest point is where the Corinth Canal was built (1880-1893). It was a strategic point and for this reason a wall had already been built since ancient times (end of the 5th century BC), which had been preserved until the Byzantines ( Hexamilion ).

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. The modern city of Corinth is located approximately 5 kilometres (3.1 mi) northeast of the ancient ruins. 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.

The Archaeological Museum of Ancient Corinth, located in the archaeological site of ancient Korinthos, was built in 1932 by the American School of Classical Studies that conducted excavations in the area. The renovated building familiarizes the visitor with one of the most important ancient Greek cities. It exhibits Prehistoric collections, finds from the Asklepieion, and artifacts from the Geometric times until the Byzantine period. Τhe Τwin Kouroi from ancient Tenea, an exquisite sample of archaic plastic art, recently became part of the exhibition.

The temple of Apollo archair temple built of 40 monolithic Dorian columns with only seven of them maintained over the ruins of the ancient market. The original temple dating back to between the early 7th and early 6th centuries BC. it was built of stone, bricks and wooden beams and carried a heavy and complex four-pitched roof made of clay tiles. It was probably a simple construction without external columns, while in other respects it brought occasion. -Asklepieion, the healing sanctuary -Corinth, a Roman colony -The Museum’s Atrium

Akrokorinthos, a steep rock 575m. high which because of its morphology, used to be a viewport (Acropolis) in ancient times in case of a raid either from central Greece or from the sea. Acrocorinth is a monolithic rock overlooking the ancient city of Corinth, Greece. In the estimation of George Forrest, "It is the most impressive of the acropolis of mainland Greece". With its secure water supply, Acrocorinth's fortress was repeatedly used as a last line of defense in southern Greece because it commanded the Isthmus of Corinth, repelling foes from entry by land into the Peloponnese peninsula. -Amphitheater -Apostle Paul's step - Theater - Sanctuary of Asclepius - Sanctuary of Demeter and Koris - Fountain Glavki - Temple of Apollo - Temple of Octavia - Early Christian Basilica of the Skull - Early Christian Basilica of Lechai - Pirine - Conservatory

Church of Apostle Paul is an important Orthodox church in the city of Corinth, dedicated to Apostle Paul, who preached Christianity there during the 1st century AD. Corinth was one of the most significant places in Paul’s missionary journeys, and he lived and taught in the city for about eighteen months. The church stands near the ancient site where Saint Paul is believed to have spoken to the Corinthians. Today, it is a place of worship and pilgrimage, admired for its spiritual importance, elegant architecture, and connection to early Christian history.