The disc of Phaistos is the most important example of hieroglyphic inscription from Crete and was discovered around 1903-05 in a small room near the depositories of the "archive chamber", in the north - east apartments of the palace, together with a Linear A tablet and pottery dated to the beginning of the Neo-palatial period (1700- 1600 B.C.).
The disc of Phaistos can be seen at the Archaeological Museum of Heraklion.

Village of the area of Kastelli with 115 residents, Agia Paraskevi is situated 5 km northeast of Kastelli at an altitude of 400m. It is first mentioned in the Turkish census of 1671 as Agia Paraskevi tou Xourdou with 17 haratsia (head tax).
It is very possible that Santa Venerata, a village mentioned in 1463 by Cardinal Bissarion, is the name by which Agia Paraskevi was known at that period.

The south end of the West Court is occupied by four large stone-built structures known as "Kouloures" (rings) ,belonging to the Old Palace complex. The workmen on Evans' excavation gave them their name when they were first discovered at Knossos. Similar pits were also later discovered at the Palace of Malia. Their exact use is unknoun, although today they are generally regarded as depositories for offerings from the Palace shrines, or granaries.
In front of the Phaistos "Kouloures" passes a "Processional Causeway" which starts in the West Court. One of the "Kouloures" is cut across by a cobbled road built in later years.
The well next to them belongs to the Hellenistic period (323 - 67 BC).

Bizariano (GR: Μπιτζαριανό) is a traditional small village of about 24 inhabitants in the area of Kasteli Pediada, 320 m above sea level and about 3 km to the north of Kasteli on the road to Hersonissos.
A pretty village with stone houses, graphic lanes and courtyards covered in flowers.
It is first mentioned in 1881, as Bizariano, Municipality of Kasteli, with 55 Christian inhabitants. In 1951, it changes its name to Pigi. Its first name is that of a family, Bizariano. Close to the village, in a beautiful spot full of lush vegetation, evergreen plane trees and gushing water, stands the ancient church of Agios Pandeleimonas, with its three naves.
Two rows of arches supported by columns without capitals separate the naves. Another column is made exclusively of capitals, apparently brought in from other churches or temples. Practically all the middle outside wall is decorated with inscriptions, Byzantine reliefs and crosses.

Agios Panteleimon (External)
Agios Panteleimon (External)
Agios Panteleimon (interior)

The artistic highlight of the church of Saint Panteleimon are its fresco scenes painted on the walls which are among the oldest in Crete, although very few frescoes remain. In the lower section of the arch, there is the representation of the three Hierarchs, shown on full length, with vertical inscriptions on it. On the two side walls there are the representations of Saints in a colossal size. These scenes were designed to be a source of biblical education to the faithful, who would have been illiterate at that time.

Diavaide (GR: Διαβαϊδέ) has 120 inhabitants and lies very near to Kasteli (700m to the SE) at 355m above sea level.
The earliest reference to the name is found in the Ducal Archives at Chandax in 1378. Another document in the same archives mentions a certain G. Dochiano, inhabitant of Diavaide.
In an inscription, found in the Byzantine church of Agios Georgios Sfakiotis, the name of the village is clearly mentioned, indicating that Diavaide existed well before the Turkish occupation. In that church there is a unique fresco of Byzantine art that represents Saint George and Saint Demeter passing through the sea on their horses, while at their feet lie various sea creatures; crabs, lobsters, and other fish, a strange phenomenon indeed, considering that the village is so far away from the sea. There is also the church of Agios Nikolaos in the village dated to the same period.
The village took part in all the main fights by Crete against the enemies of its freedom, while during German occupation the high college of Kastelli continued to operate in Diavaide houses.
The cultural association of the village, one of the first in this area, strives to maintain the cultural traditions and the continuity of village history through the years.

The church of Agios Georgios (St. George GR: Αγιος Γεώργιος) Phalandras stands a little to the south from the Palace of Phaistos on the road to Agios Ioannis village. The church was the monastery church of the Orthodox male monastery of the same name, dated to the early Venetian period (16th century), which operated normally until its dissolution in 1821. The ruins of the fortified building complex around the church were still visible until the first decades of the 20th century.

The "Royal Villa" at Ayia Triada which is situated very close to Phaistos, was built in about 1550 BC. i.e. just before the new palace at Phaistos, and was destroyed by fire in l450 BC, like all other important Minoan centres. It succeeded the first palace at Phaistos as the economic and administrative centre of the regions depriving the new palace there of this role, and appears to have had connections with Knossos. The two wings, with an open-air space between them, consisted of groups of interconnecting rooms (polythyra), storerooms and stairways. On the site of the ruins, a Mycenaean megaron, the so-called "Agora" and an open - air shrine were subsequently built.
In the villa's disaster layer from the fire in 1450 BC, excavation revealed a valuable group of exceptional works of art, precious materials, records in Minoan script and seals. The famous black serpentine vessels, the "Harvesters' Vase", the "Boxers' Vase" and the "Chieftain ‘ s Cup", the wall paintings depicting the natural landscape, the sarcophagus, the bronze and clay figurines of worshipers and the copper ingots from the Treasury are among the most noteworthy findings.