iLoveAncient sites
Samos: Heraion and Eupalinos Tunnel
Ancient wonders of Samos.
By the iLoveGreece editorial team · Last reviewed 2026-11
Quick answer
Samos has two UNESCO wonders: the Heraion, a vast sanctuary of Hera, and the Tunnel of Eupalinos, a 1 km aqueduct dug from both ends in the 6th century BC. Both are near Pythagoreio, a pretty harbour town.
What to know
- Tunnel visits are in small groups; book or arrive early.
- Not for claustrophobic travellers.
- Heraion is flat with one standing column.
- Pythagoreio has good tavernas.
FAQ
How long is the tunnel visit?
Usually 20–40 minutes depending on the route.
Related guides
Updated 2026-11. General planning guidance. Check with operators and local authorities.