What is Yedigöller?
Yedigöller — literally "Seven Lakes" — is a national park tucked into the dense mixed forests of Bolu province, in Turkey's Western Black Sea region. It takes its name from seven small lakes (Büyükgöl, Deringöl, Seringöl, Nazlıgöl, İncegöl, Küçükgöl, and Sazlıgöl) that formed over centuries as landslides dammed the streams draining this steep, forested valley. The result is a chain of still, forest-ringed pools connected by walking trails, set among some of the richest deciduous woodland in northern Anatolia — beech, oak, hornbeam, linden, and maple growing thickly on the surrounding slopes.
Yedigöller earned protected status as a national park in 1965, one of Turkey's earliest, precisely because of this rare combination: a cluster of landslide lakes within a single compact, walkable area, wrapped in forest that puts on one of the most dramatic seasonal colour displays anywhere in the country. Today it draws day-trippers from Istanbul and Ankara, campers looking for a forest weekend, and photographers chasing the autumn light, alongside a smaller number of visitors who come in spring and summer for the cooler air and quieter trails.
Quick facts
| Location | Bolu province, Western Black Sea region, Turkey |
| Coordinates | approx. 40.944° N, 31.75° E |
| What it is | Seven landslide-dammed lakes in a national park forest |
| Famous for | Turkey's top autumn-foliage destination (Oct–Nov) |
| Entrance cost | National park entry fee, per person and per vehicle |
| Distance from Bolu | ~40 km / about 1.5 hours by road |
| Nearest airports | Istanbul and Ankara (~2.5–3 hours drive) |
| Best time to visit | Mid-October to mid-November for colour; spring/summer for cool, lush walking |
| On-site facilities | Marked trails, viewpoints, picnic areas, camping grounds |
Why travelers come here
The single biggest draw is the autumn transformation. For a few weeks each year, usually from mid-October into November, the beech and maple canopy around the seven lakes turns a mix of crimson, amber, and gold, and the still water of lakes like Büyükgöl mirrors the colour back in near-perfect reflections on calm mornings. Turkish and international photographers plan trips specifically around this window, and it has made Yedigöller one of the most photographed natural landscapes in the country during that season.
Outside of the autumn peak, Yedigöller still rewards a visit. Spring brings wildflowers and rushing meltwater feeding the lakes; summer offers cool, shaded walking under full green canopy, a welcome break from the heat of the interior plateau. Wildlife sightings — red deer, wild boar, and a wide range of forest birds — are possible throughout the year for visitors who walk quietly and early in the day. The network of short trails and boardwalks between the lakes makes it accessible to most fitness levels, and picnic tables and camping areas near the lakeshores mean a day trip can easily become an overnight stay.
Planning your visit
Yedigöller works best as a full day trip from Bolu, or as a weekend with a night of camping if you want sunrise light on the water without the midday crowds. The access road from Bolu is winding and narrow in places, climbing through forest before descending into the park, so allow more time than the distance alone suggests — especially on busy autumn weekends when traffic can back up near the entrance. A national park entrance fee applies per person and per vehicle, payable at the gate.
Because Istanbul and Ankara are both roughly 2.5–3 hours away by car, Yedigöller is a realistic day trip or weekend escape from either city, and it is increasingly offered as a stop on organized Black Sea and nature-tour itineraries. For the full logistics, see our guides to how to get to Yedigöller, the best time to visit, and camping. If you would rather not drive the mountain roads yourself or plan the trip from scratch, guided Yedigöller and Black Sea tours handle transport, timing, and local knowledge of exactly when the colours peak.
The seven lakes, briefly
Each of the seven lakes has its own character, from the relatively large and accessible Büyükgöl near the park entrance to smaller, quieter pools like Sazlıgöl and Küçükgöl further along the trail network. Some are easy short walks from the parking and picnic areas; others require a longer forest hike to reach. Our dedicated page on the seven lakes covers each one, the trails connecting them, and which are easiest to reach for visitors with limited time.
Who Yedigöller is for
Yedigöller suits travelers who want a genuine forest and nature experience within a manageable drive of Turkey's two largest cities. It's ideal for photographers chasing autumn colour, families and groups looking for an accessible camping or picnic weekend, and hikers who want gentle, well-marked trails rather than a demanding mountain trek. It's less suited to travelers seeking beach resorts, nightlife, or a heavily paved, fully accessible experience — the roads are rural and winding, and the best parts of the park are reached on foot.
Yedigöller in context
Bolu province and the wider Western Black Sea region offer more than just Yedigöller — nearby destinations include the Abant and Gölcük lakes, and the forested highlands stretching toward the Black Sea coast. But among all of them, Yedigöller stands out specifically for its cluster of seven distinct lakes in one protected area and its reputation as the country's foremost autumn-foliage destination, a status few other Turkish nature sites can claim.
Whether you're planning a single autumn day trip timed to the peak colour window, a weekend of lakeside camping, or simply researching whether Yedigöller fits into a broader Istanbul-Ankara-Black Sea itinerary, the pages linked throughout this guide cover the practical details — routes, timing, wildlife, and where to stay — to help you plan a trip that matches what you're looking for.