Athens is one of the world oldest cities and increasingly one of its most exciting to visit. The Acropolis at golden hour, souvlaki at midnight, ferry to Santorini the next morning. Here is your complete 2026 guide.
Greece eSIM Coverage
| Location | Cosmote | Vodafone GR | Verdict |
|---|---|---|---|
| Athens city | 5G excellent | Excellent | Both great |
| Santorini (Oia, Fira) | Excellent | Good | Cosmote best |
| Mykonos | Excellent | Good | Cosmote best |
| Remote small islands | Best rural reach | Limited | Cosmote only |
| Ferry (open Aegean) | Partial near coasts | Limited | Drops mid-sea |
Athens Must-Visit
Acropolis and Parthenon: Signal is excellent at the summit 156m above Athens. Visit at 8am opening or 1 hour before closing. Buy combined ticket online at etickets.tap.gr to skip the queue. Cosmote 4G works at the top.
Plaka and Monastiraki: Historic neighbourhoods at the foot of the Acropolis. Ottoman-era streets, tavernas, flea markets. All networks excellent here.
Acropolis Museum: World-class museum. Book online at theacropolismuseum.gr. Glass floors show ancient excavations beneath the building.
Cape Sounion (Temple of Poseidon): 70km south of Athens. Clifftop temple at sunset. Cosmote signal works at the clifftop. KTEL bus day trip from Athens.
Ferry Day Trips from Athens
- Hydra (2 hours): No cars on the island. Donkeys only. Phone works.
- Aegina (1 hour): Temple of Aphaea and pistachio groves. Easy half-day.
- Poros (2.5 hours): Quieter than the big islands. Pine hills and calm harbour.
What Tourists Get Wrong
- July and August: 38-42 degrees at the Acropolis with no shade. Visit May, June, or September-October.
- Restaurants directly in Plaka square: overpriced. Walk one block back for real local tavernas.
- Oia sunset in Santorini: every tourist crowds the same spot. Find a cliff edge 200m away for the same view.
- Greek internet is fast and reliable on all major tourist islands.
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Athens, Santorini, Mykonos, Greek Islands, plus all 35 countries in Europe on one plan. From 6.99 USD.
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