Know Before You Go
Klafthmonos Square is generally a safe area of Athens during the day, however this area is frequently used for political demonstrations and other protests and it is not uncommon for clashes with law enforcement to take place. Additionally it is advisable to proceed with caution and be alert after dark in this area (and in most underground parking structures in an urban environment). Individuals with issues in underground and/or confined spaces should consider the environment before entering. The ruins are so obscure many of the parking attendants that work in the facility are unaware of their existence within the structure and will try to direct you to the ruins in the park upstairs if you use words like “archaeology” and “Themistocles”. They are not archaeology experts (nor expected to be) and are deserving of respect.
The largest standing portion of the wall is on display at the archaeological site of Kerameikos (north west portion of wall). This site displays the remains of the wall outdoors. The site requires a fee to enter however there is great viewing from public areas outside the paid site.
The parking structure is currently open the following hours:
Monday and Tuesday: 07:00-24:00
Wednesday and Thursday: 07:00-03:00
Friday and Saturday: 07:00-06:00