Markopoulo Olympic Equestrian Centre

Myrrhinus or Myrrinous (Ancient Greek: Μυρρινοῦς) was a deme of ancient Attica. It lay to the east of Prasiae. Artemis Colaenis was worshipped at Myrrhinus; and in one of the inscriptions recovered at Merenda mention is made of a temple of Artemis Colaenis.The site of Myrrhinus is located near modern Merenda.The recent excavation at the new Equestrian Centre at Merenda, Markopoulo, where the ancient 𝘥𝘦𝘮𝘰𝘴 of Myrrhinous is located, gives some idea of the aspect of the centre of the aforesaid 𝘥𝘦𝘮𝘰𝘪. Here, in the middle of the flat space lying between the foothills of the homonymous mountain and the low vine-planted hills, a peripteral temple, probably dedicated to Artemis Kolainis, one of the most important in the city, and a sanctuary of Aphrodite have been brought to light at the crossroad of the two central arteries of the 𝘥𝘦𝘮𝘰𝘴, which are lined at intervals by cemeteries, classical tomb enclosures and two sanctuaries. Identified and excavated around the temple, at some distance, were three porticoed buildings of public character, in no particular order, the sanctuary of a phratry, and very close behind it, a monumental fountain that had been reconstructed in Roman times, while farmhouses extended on the small hills around.

Angele (Ancient Greek: Ἀγγελή) was a deme of ancient Attica, of the phyle of Pandionis, sending two, three, or four delegates to the Athenian Boule. Its site is located near modern Angelisi.

Cytherus or Kytheros (Ancient Greek: Κύθηρρος or Κύθηρος), also known as Cytherum or Kytheron (Κύθηρον), was one of the twelve cities of ancient Attica, and afterwards a deme. Pausanias states that the nymphs of the river Cytherus in Elis were called Ionides from Ion, the son of Gargettus, when he migrated from Athens to Elis.The site of Cytherus is located near modern Pousi Kaloyerou.

Porto Rafti (Greek: Πόρτο Ράφτη), officially named Limin Markopoulou (Λιμήν Μαρκοπούλου), is a seaside resort town located in East Attica, Greece. Porto Rafti's main source of income is tourism and winemaking. It is part of the municipality of Markopoulo Mesogaias. In the 2011 census data, its permanent population was 9,686. Today, the permanent population is believed to be closer to 15,000, peaking at 100,000 every year during the summer season.

Hagnus (Ancient Greek: Ἁγνοῦς, romanized: Hagnous) was a deme of ancient Attica. From the mythical story of the war of the Pallantidae against Theseus, we learn that the demoi of Pallene, Gargettus, and Agnus were adjacent. When Pallas was marching from Sphettus in the Mesogaea against Athens, he placed a body of his troops in ambush at Gargettus, under the command of his two sons, who were ordered, as soon as he was engaged with the army of Theseus, to march rapidly upon Athens and take the city by surprise, But the stratagem was revealed to Theseus by Leos of Agnus, the herald of Pallas; whereupon Theseus cut to pieces the troops at Gargettus. In consequence of this a lasting enmity followed between the inhabitants of Pallene and Agnus.The road from Sphettus to Athens passed through the opening between Mount Pentelicus and Mount Hymettus. A monastery there by the name of Ieraka (or Hieraka) is the site of Gargettus. The proximity of Pallene and Gargettus is indicated by another legend. Pallene was celebrated for its temple of Athena; and we are told that Eurystheus was buried at Gargettus in front of the temple of Athena Pallenis. We know further that Pallene lay on one of the roads from the city to Marathon.Between the monastery of Ieraka and the small village of Charvati, a celebrated inscription respecting money due to temples was discovered , and which was probably placed in the temple of Athena Pallenis. In Ieraka there was also found the boustrophedon inscription of Aristocles, which probably also came from the same temple. In one of the churches nearby, George Finlay found the following inscription fragment: ΞΕΟΦΑΝΗΣ ΠΑΛΛΗΝΕΥΣ - XEOPHANES PALLENEUS. This situation, where the roads of the Mesogaea necessarily unite in approaching Athens, is such a point as would be important, and often occupied in military operations; and accordingly, we find that on three occasions in the early history of Athens, Pallene was the scene of action; first, when Eurystheus fought against the Athenians and Heracleidae; again, when Theseus was opposed to the Pallantidae; and a third time when Peisistratus defeated the Alcmaeonidae. The inscription, however, in such a case, is not decisive evidence of location, as material may be moved (see spolia). Agnus is placed by Ludwig Ross in the hollow which lies between the extreme northern point of Hymettus and Ieraka. William Martin Leake, on the other hand, fixes it at Markópulo, in the southern part of the Mesogaea, because Finlay found at this place an inscription, .... υλίδης Ἀγνούσιος - ... ylides Agnousious. Modern scholars favor the Markopulo location, and fix the site as southwest of Markopoulo Dardiste.Notable among the ancient articles related to Agnus is the Fragment from the tomb of Nikarete; Nikarete was a daughter of Ktesikles of Agnus.

Markopoulo Mesogaias (Greek: Μαρκόπουλο Μεσογαίας) is a town and a municipality in East Attica, Greece. The municipality has an area of 81.844 km2 (31.600 sq mi).

Municipal Stadium of Markopoulo (Greek: Δημοτικό Στάδιο Μαρκοπούλου) is a multi-use stadium in Markopoulo Mesogaias, Greece. It is currently used mostly for football and volleyball matches and has a capacity of 3,000 seats (stadium), an 600 seats (indoor hall) accompanied by a brand new gym hall built in 2019. Due to extended renovation works for the 2025-26 Superleague 2 Greece which are to be completed by August 2025, the football team of Marko has been using the Koropi Municipal Stadium as a temporary stadium.

Steiria (Ancient Greek: Στείρια) was a deme of ancient Attica on the east coast, between Prasiae and Brauron. Stiris in Phocis is said to have been founded by the inhabitants of this deme. The road from Attica to Steiria and the harbour of Prasiae was called the Στειριακὴ ὁδός. Steiria, located west of Porto Rafti, was the deme of Theramenes and Thrasybulus.

Greek National Road 89 is a road in East Attica, Greece. It connects Gerakas with Sounio, via Koropi and Lavrio. Between Gerakas and Koropi it has lost importance after the opening of the Motorway 6. There are plans to upgrade the section between Koropi and Lavrio to motorway standards, by constructing junctions to replace the traffic lights and generally upgrading the road. This new road will carry the designation A61.

Kouvaras (Greek: Κουβαράς) is a village and a former community in East Attica, Greece. Since the 2011 local government reform it is part of the municipality Saronikos, of which it is a municipal unit. The municipal unit has an area of 24.371 km2.

The Brauron Archaeological Museum is a museum in Markopoulo Mesogeias, Greece. Much of the collection is derived from excavations in the Sanctuary of Artemis at Brauron. Of note is a statue representing a small girl, a so-called "bear" (arktoi) (Medvedicka).

Brauron (/ˈbrɔːrɒn/;Ancient Greek: Βραυρών) was one of the twelve cities of ancient Attica, but never mentioned as a deme, though it continued to exist down to the latest times. It was situated on or near the eastern coast of Attica, between Steiria and Halae Araphenides, near the river Erasinus. Brauron is celebrated on account of the worship of Artemis Brauronia, in whose honour a festival was celebrated in this place. This site includes the remains of a temple, a stoa (colonnaded walkway), and a theatre, providing insights into the religious practices and social life of ancient Greece. Its significance as a religious and cultural site can be further understood through the exploration of its archeological remains and historical accounts.