12 km from Argos is the village of Midea, above which rises a hill with the ruins of the once magnificent Mycenaean acropolis. Researchers consider it the third most important and well-fortified acropolis Argolis after Mycenae and Tiryns, as well as a significant administrative and economic center. The Citadel, built on top of a hill at an altitude of 270 m above sea level and is located between Mycenae and Tiryns, was considered strategically important object. Panoramic view from the top of the hill provides control over the entire valley and the bay.

The construction of the Acropolis, as well as at Mycenae and Tiryns, use so-called cyclopean masonry, representing a structure of huge stone blocks. Interestingly, in these facilities are not used binder solution. The ancient Greeks attributed a masonry structure with Cyclops, where possible and gave the name "cyclopean".

The first major excavations were conducted in 1939 by the Swedish archaeologist Axel Persson .  Circular Cyclopean walls covers an area of ​​24,000 sq.m. . m .  and protects the upper and lower terraces of the acropolis north-western and north-eastern slopes .  On the southern side protects the Acropolis steep cliff, so the additional strengthening is not required .  Acropolis has two gates located opposite each other in the western and eastern part of the strengthening .  East Gate is the main entrance and led to the Upper Acropolis, located on a rocky site .  Today, the eastern gate cleared of blockages and appear to us as a wide breach in the wall .  The Western Gate led to the Lower Acropolis from its terraces .  Near the entrance is a room probably used as a premise for the protection and storage .  Also on the Lower Acropolis it was found a large rectangular structure (Megaron) .  Acropolis was equipped with a drainage system with built-in pipeline and underground tanks .

At the end of the 13th century BC the earthquake fortification of the Acropolis and all the buildings were badly damaged. During excavations in different parts of the acropolis have been identified skeletal remains (earthquake victims), weighed down by huge stones. The citadel was rebuilt after the devastation and was used in the 12th century BC

During the excavation of the acropolis Midea found many valuable and interesting artifacts: pottery, bronzes, fragments of frescoes, seals, weapons, jewelry, a variety of stone and metal products, utensils, etc.