The Corinth Canal is a man-made waterway located in Greece that connects the Gulf of Corinth in the Ionian Sea with the Saronic Gulf in the Aegean Sea. It cuts through the narrow isthmus that separates the Peloponnese peninsula from the rest of Greece, and is approximately 6.4 kilometers long. The idea for the Corinth Canal dates back to ancient times, when various rulers and engineers proposed the construction of a canal to allow ships to avoid the long and treacherous journey around the Peloponnese peninsula. However, it was not until the late 19th century that the canal was actually built. Construction of the Corinth Canal began in 1881, and was completed in 1893. The canal is approximately 23 meters wide at the surface and 8 meters deep, and can accommodate ships up to 21 meters wide and 5.5 meters draft. It is a popular destination for tourists, who can watch ships passing through the narrow canal from the safety of the bridge or from boats that offer tours of the canal. The Corinth Canal is also an important transportation route for commercial ships, as it significantly reduces the travel time between the Ionian and Aegean seas. However, its narrow size and steep cliffs make it challenging to navigate, and it is not always accessible to larger vessels. Overall, the Corinth Canal is an impressive engineering feat and an important transportation and tourist attraction in Greece.

Acrocorinth (Greek: Ακροκόρινθος, lit. 'Upper Corinth' or 'the acropolis of ancient Corinth') is a monolithic rock overseeing 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. The Acrocorinth was continuously occupied from archaic times to the early 19th century. Along with Demetrias and Chalcis, the Acrocorinth during the Hellenistic period formed one of the so-called “Fetters of Greece” – three fortresses garrisoned by the Macedonians to secure their control of the Greek city-states. The city's archaic acropolis was already an easily defensible position due to its geomorphology; it was further heavily fortified during the Byzantine Empire as it became the seat of the strategos of the thema of Hellas and later of the Peloponnese. It was defended against the Crusaders for three years by Leo Sgouros. Afterwards it became a fortress of the Frankish Principality of Achaea, the Venetians, and the Ottoman Turks. Three circuit walls formed the man-made defense of the hill. The highest peak on the site was home to a temple to Aphrodite. The temple was converted to a church, which in turn was converted to a mosque. The American School's Corinth Excavations began excavations on the Acrocorinth in 1929. Currently, it is one of the most important medieval castle sites of Greece.

The Archaeological Site of Ancient Corinth is an important historical site in Greece located about 78 km southwest of Athens. Corinth was one of the major cities of ancient Greece, and its ruins provide valuable insights into the ancient Greek civilization and the daily life of its people. The archaeological site of Ancient Corinth covers a large area and includes several notable ruins, such as the Temple of Apollo, the Agora (marketplace), the Peirene Fountain, and the Bema (judgment seat). The temple of Apollo was one of the most important sanctuaries in Ancient Corinth and was built in the 6th century BCE. It was dedicated to Apollo, the god of light, music, and poetry, and was a center for religious and cultural activities. The Agora was the center of commerce and civic life in Ancient Corinth and was surrounded by important buildings such as the courthouse, the prison, and the mint. The Peirene Fountain was the main source of water for the city and was a popular spot for social gatherings. The Bema, or judgment seat, was a raised platform where the city officials and judges would make their decisions. Visitors to the Archaeological Site of Ancient Corinth can explore the ruins of these and other important buildings, as well as see artifacts that have been excavated from the site. The site also provides stunning views of the surrounding countryside and the Gulf of Corinth.