Lake Stymphalia
A shallow reed-filled lake in the mountains, the setting of the sixth labour of Hercules and now a birdwatching reserve.
Updated 21 October 2026

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Stymphalia is a mountain wetland at about 600 metres between Kyllini and Oligyrtos, a shallow, seasonally fluctuating sheet of water almost entirely covered in reeds. It is the lake where, in myth, Hercules drove off the man-eating Stymphalian birds, and the association draws visitors who arrive expecting open water and find a marsh, which is precisely its value: many bird species use it, including herons, ferruginous ducks and large winter flocks, and a hide and short trails serve watchers. The Environment Museum of Stymphalia above the shore explains the wetland and the traditional water management of the valley through working models. Around the lake stand the ruins of ancient Stymphalos with its walls and temple foundations, and the thirteenth-century Cistercian abbey of Zaraka, unusual in Greece.
What you'll find
- The reed marsh - a shallow lake of open water and reedbed.
- The birds - herons, ducks and migrants, best at dawn from the hide.
- Zaraka Abbey - the ruins of a rare Cistercian monastery in Greece.
- The environment museum - models of the valley's water and farming systems.
When to go
Spring for breeding birds and full water, late autumn for arrivals from the north. By late summer the lake shrinks dramatically and can look more like a wet field.
Things to know
Anyone hoping for a scenic lake will be disappointed: this is a reedbed, and the pleasure is ornithological. Trails are short and signage thin. The museum keeps limited hours, so check before driving up.
Nearby
Lake Doxa and the Feneos valley are over the mountain; Nemea's vineyards lie to the east.
Key facts
Source: Wikidata, item Q1251026, read on 18 October 2026.
What to pack for Lake Stymphalia
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Binoculars - The single best wildlife tool - even a compact pair transforms a sighting. Find on Amazon
- Modest clothing - Shoulders and knees covered - the single most common requirement. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.





