Monuments & Museums

At the south edge of the village is the Franko-Byzantine church of the Koimisi of the Theotokos, one of the greatest medieval monuments in Greek territory. The question of its founding and chronology has been at the centre of archaeological research for decades.

At the summit of the rocky hill, known as 'Paliokastro' or 'Hadrian's Castle', east of the village of Agios Adrianos, is a small fort that was built at the end of the 4^th century BC. The construction belongs to a network of forts from the Hellenistic period, which controlled the land route that connected the city of Argos with Epidaurus.

Nearly rectangular in plan. It consisted of three levels (ground, and first and second storeys), and had a four-sided tiled roof.

The rocky tip of the peninsula of Nafplio, which is known today as Akronauplia, is 800m at its longest, has a height of 85m, and is around 250m wide. It is on this peninsula that the castle named after it was built. The remains of human habitation from all historical periods have been found there. As part of the implementation of the NERF 2011-2015 project, 'The Display of the Castle of Akronauplia in Nafplio, Nafplio Municipality, Regional Unit of Argolis', the 25^th Ephorate of Byzantine Antiquities, now the Ephorate of Antiquities of Argolis, carried out work for the uncovering, cleaning, documenting, protecting and displaying of the monument.

The area of Alea (Bougiati) is 74 km west of Argos. In ancient times, Alea was an Arcadian city founded by Aleos, the son of Apheidas. The well-fortified acropolis, built of limestone blocks, took up the plateau on Tapia or Goula Hill.

Southwest of Ermioni, close to modern Porto Heli, the ancient city of Alieis was founded at the end of the 7^th century BC. It flourished between the 6^th and 4^th centuries BC. Following the destruction of Tiryns by the Argives in around 460 BC, many Tirynthian exiles settled here, which is demonstrated by the coins of the city of Alieis which bear the inscription 'Tirynthion' [of Tiryns] and date from the end of the 5^th century to the beginning of the 3^rd century BC.

The structure described is in remarkably good condition, still standing at its original height. It was recorded and drawn in 1811 by Otto Magnus von Stackelberg, who did not propose a specific interpretation regarding its date or function. The building is oriented east–west and measures approximately 11.5 × 11.0 metres externally, with a preserved height of 4.8 metres on the southern side and about 2.7 metres from the interior threshold of the entrance. It is constructed in polygonal masonry similar to that of the Pyramid of Hellinikon.

Internally, the structure is divided into four sections by substantial transverse walls. The entrance faces east and features a monolithic lintel, with a door opening inward and provisions for a locking bar. Water appears to have been channelled through drainage spouts entering from the north and exiting through the eastern wall, likely supplied from a nearby spring.

The purpose of the building remains uncertain. It has been described as a “fortified tower,” although its lack of windows or defensive apertures challenges an interpretation as a military outpost. Its remote location, with limited visibility except toward the east and west (including sightlines toward Mycenae), further complicates its identification. Based on limited archaeological evidence, it has been tentatively dated to the 4th century BCE, although its exact function and chronology remain debated.

This church, which is known as 'Agia Sotiria', is located in the fertile area of the Argolic plane, on the road from Chonika (now Neo Heraio) towards Anyfi.

The Old Monastery of Talantio is located to the south east of Arachnaio and is one of the most important monuments in the area. The catholicon would have been dedicated to the archangels, the Virgin Mary and Agios Vlasios, while the chapel was dedicated to Agia Marina.

The church of Profitis Elias is built on the top of the low lying Aspida Hill (Deirada). It is a small single-room church with a wooden roof, which has a small semi-circular apse on its eastern side.

This limestone construction stands at an altitude of 920m, and overlooks the Inahos Valley and the road to Alea. It was built at an important lookout point and controlled the access and communication network (ancient roads) which were connected with the socio-political situation in northwest Argolis during the 5^th and mostly the 4^th centuries BC.

The Ancient Theatre of Argos was established in the Hellenistic period (c. 300–250 BCE) and is among the largest theatres in the Greek world, with a capacity of approximately 20,000 spectators. The cavea and orchestra are largely rock-cut and organized by diazomata, stairways, and kerkides, with proedria reserved for dignitaries. The circular orchestra was equipped with a drainage system and accessed via the parodoi.

The skene complex included the proskenion, skene, and associated auxiliary spaces, incorporating subterranean passages for stage use. In the Roman period, the theatre was extensively remodelled, including the construction of a monumental scaenae frons, an enlarged stage (logeion), and additional entrances and decorative features. Later adaptations for arena-type spectacles led to further modifications, such as partial enclosure of the orchestra and installation of a water basin.

The monument ceased to function in the 5th–6th century CE and remained partially visible until modern archaeological excavations revealed its structure.

From the 1960s, the Archaeological Museum of Argos has been housed in a building complex which consists of the historic residence of General Dimitrios Kallergis and a modern building that was attached to it, at the intersection of Vasilissis Olgas and Kallergis streets. The Kallergis residence, built in 1830, was converted between 1956-1957 to make it suitable for a museum, while the additional modern building, which was built with funds from the French Archaeological School, was dedicated in 1961.

The building has been closed to the public since 2014, as there is work going on to upgrade the building and re-display the collection, with joint funding from Greece and the European Union.

Το Ηραίο, ιερό της θεάς Ήρας, της προστάτιδας θεάς της πόλης-κράτους του Άργους, ήταν το επίσημο θρησκευτικό του κέντρο, παρόλο που απείχε 8 χιλιόμετρα.

The history of the fortifications on Larissa Hill begins in prehistoric times and reaches the Greek revolution of 1821. Part of the long history of the city of Argos from prehistoric times, it was, from the first, a fortified observation post and the last line of defence for the city.

On a small limestone outcrop opposite the church of Panagia Karya in Kastro, the rectangular facade of an ancient wall is visible, inside which a fort from the Byzantine was based. It was part of the defensive network (beacons) which controlled the outlying areas of NW Argolis in the 5^th and mostly 4^th centuries BC.