The fortress of Filis is located in West Parnitha at 687 meters high. It had extremely thick external walls of 2.75 meters and played an important role in Athens' defense system after their defeat in the Peloponnesian War. It was supplied with water from four northern sources and had additional water tanks to withstand sieges.

1. FROYRIO FΙLIS

2. The “ fortess of Filis” is located in West Parnitha.

3. Its height is 687 meters and the thickness of the external
wall is 2,75 meters

4. It played an important role in the single defense system
organized by the Athenians after their defeat in the
Peloponnesian War

5. Supplied with water from four sources in the north, and
had several water tanks in case of siege.

6. The fortress already existed before the 337/6 BC

7. • Xristina Rontou
• Ntina Naxla
• Marios Ntalipai
• Konstantina Paraskeuopoulou