One of the main attractions of the capital of the island of Kefalonia Argostoli is a very interesting Archaeological Museum. It is located near the city's central square.

The museum presents artifacts found during archaeological excavations on the island of Kefalonia, from prehistoric times to the Roman era. The museum also has an excellent collection of Mycenaean finds. The building where the museum is located today, was built in 1960 by the famous Greek architect Patroclos Karantinosa. Old museum was destroyed in 1953 during a strong earthquake. In the Archaeological Museum are equipped with three exhibition galleries.

In the collection of the Archaeological Museum are numerous ceramic and bronze sculptures and figurines, jewelry, household utensils, coins, weapons and a variety of burial artifacts and more .  Among the most important exhibits of the museum is to provide a great Mycenaean amphora in the form of a conical bowl decorated with hatched triangles and jewelry from twisted golden spiral .  These relics have been found in Mycenaean cemetery Lakkithra and date from the 12th century BC . e .  Also, a special place in the exhibition are large painted vase with two handles and a bronze fibula with cemetery Diakata (both findings belong to the 12th century BC . e . ) .  Interesting and artifacts such as the bronze head statues of the Roman period, fragments of mosaic floor of the temple of Poseidon (2nd century BC . e . ), Tombstones (3rd century BC . e . ), A unique collection of ancient coins and archival photos from the excavation in 1899 in themselves . 

In April 2010, after an extensive restoration of the Archaeological Museum reopened its doors to visitors. Today it is one of the best museums in the Ionian Islands.