The Tower of the Winds is the white-marble octagonal monument standing inside the Roman Agora, with exterior reliefs of the eight winds carved high on each face and visible sundials on its walls. Also known as the Horologion of Andronikos Kyrrhestes, it is one of Athens’ most distinctive surviving ancient scientific structures and remains easy to identify on sight within the Plaka core.

Quick facts
- Best for: ancient science and engineering history, visitors exploring the Roman Agora in detail
- Known for: its octagonal design, wind reliefs, sundials, and identity as the Horologion of Andronikos
Why it ranks
The Tower of the Winds earns a place in the top ten because it is a rare ancient monument whose original function remains unusually legible through its form and decoration. Official and city-guide sources confirm its identity, location in the Roman Agora, and association with ancient clocks and winds, giving it a distinctive niche in the Athens historical landscape.
Location and links
- Address: Roman Agora of Athens, Plaka, 105 55, Athens, Greece
- Official website
Service area and category
- City: Athens
- Region: Attica
- Country: Greece
- Category: Historic monument
Editorial summary
The Tower of the Winds is the white-marble octagonal monument standing inside the Roman Agora, with exterior reliefs of the eight winds carved high on each face and visible sundials on its walls. Also known as the Horologion of Andronikos Kyrrhestes, it is one of Athens’ most distinctive surviving ancient scientific structures and remains easy to identify on sight within the Plaka core.