Open square next to the Sacred Harbor, one of the most important marketplaces of the Hellenistic city, paved with large granite slabs, many of which have holes for securing poles that supported awnings. On the north side is the Stoa of Philip and a small Ionic temple dedicated to Hermes, while to the east and south it is bordered by rows of shops and workshops. In the center of the square, the foundations of a square and a circular monument, also dedicated to Hermes, the god of commerce, are preserved, and around them are bases of offerings from bankers, captains, and merchants. It dates to the last quarter of the 2nd century BC.

Temple of the Delians

The Temple of the Delians or Great Temple is the last and largest of the three temples of Apollo. It is a peripteral Doric temple with six columns on each narrow side and 13 columns on each long side. Its construction began in 478 BC, was interrupted around the middle of the 5th century BC when the treasury of the Athenian League was transferred to Athens, and continued during the brief period of Delian Independence without ever being completed.

Minoan Fountain

The Minoan Fountain, mentioned in inscriptions and identified by a relief dedicated to the Minoan Nymphs, is a public cistern, carved into the natural rock in the second half of the 6th century BC. It was covered with a square building, open on the southern side, where there was a Doric stoa. On the southern side, there are also steps from which people descended to reach the water level. The fountain was in use until late Hellenistic times, when it was converted into a residence.

Terrace of the Lions

The marble lions, a dedication from the Naxians around the end of the 7th century BC, are arranged in a row, gazing eastward towards the Sacred Lake. These specific lions are replicas; the originals are kept in the museum. It is estimated that there were originally 16, but only five and parts of three more are preserved on site, while the headless body of another adorns the Naval Station of Venice.

Positioned on the western side of the road leading from the archaic port of Skardana to the temples, they were the eternal guardians of the Sanctuary.

Establishment of the Poseidoniastai of Beirut

The establishment of the Beirutians was the club of an Association of shipowners, bankers, and agents who had united to worship their own gods and more effectively protect their common commercial interests. It consists of a central courtyard with a peristyle around which there are various rooms and small temples dedicated to Poseidon, Heracles, and Rome. It dates to the last quarter of the 2nd century BC.

Stoibadeion

Rectangular exedra, in the northeast of the Sanctuary, inside which a statue of Dionysus was found flanked by the statues of two actors – Papposilenoi (in the Museum). Two pillars to the left and right of the exedra support oversized phalluses. The pillar on the south, a dedication from the Delian resident Carystius, who won as a sponsor in a theatrical contest around 300 BC, has relief scenes from the cycle of Dionysus.

The Theater

The original wooden theater was replaced in the early 3rd century BC with the current stone one. The upper theater and the lower section of the theater, which are not concentric, are separated by a diazoma. Behind the first row of seats, which was for honored persons, there are 26 rows of benches in the lower section and another 17 rows in the upper theater, divided by eight staircases into seven sections (kerkides), which could accommodate about 5,500 spectators. In front of the circular orchestra, the foundations of the stage are preserved.

Temple of Isis

The small Doric temple of Isis is located in the Sanctuary of the Foreign Gods, at the foot of Mount Cynthus. It was built in the early 2nd century BC and repaired by the Athenians in 135 BC. Inside the temple, the cult statue of the goddess, who was worshipped under various names and was the protector of sailors and the giver of good health and fortune, is still preserved.

Temple of Hera

The Doric temple of Hera was built around 500 BC, but beneath the cella, remains of an earlier temple from the early 7th century BC were found. Many archaic period vessels (in the Museum) were also found beneath the cella, several of which have incised dedicatory inscriptions. To the south of the temple is the altar of the goddess.

The House of Dionysus

The ‘House of Dionysus’ is a very good example of a private residence in Delos around the last quarter of the 2nd century BC. It was named after the famous mosaic in the atrium depicting Dionysus on a panther. A covered corridor leads from the street to the central courtyard, which is surrounded by a peristyle, onto which the ground floor rooms open. In the center of the courtyard, there is an underground cistern covered with a magnificent mosaic floor, where rainwater was collected. A stone staircase leads to the elegant private rooms on the first floor.