The lakeside loop
A flat, car-free 1.3 km of paved path where the wall of forest doubles itself on the water, easy with pushchairs and bikes.
Thecatcherintherye — CC BY-SA 4.0 · Justinianus — CC BY 4.0 · Justinianus — CC BY 4.0 · Hakkimage — CC BY-SA 4.0
Gölcük is not really a lake at all: it is a forest pond held back by a small dam, four and a half hectares of glassy water that you can walk right around in twenty minutes. Around half a million people come every year anyway, because what they are after is not the water but its frame. Dense pine, beech, fir and hornbeam climb the slopes at around 1,200 metres, and on a still morning the whole wall of trees sits doubled on the surface without a ripple. In October the deciduous trees blaze orange against the evergreens; in January snow flattens the scene into a postcard. Those two seasons are the ones that justify the drive. The spot has been a picnic ground since 1958 and only became an official nature park in 2011, after which Bolu Municipality took it on a long lease and built more than the photographs let on: a restaurant, a cafeteria, wooden bungalows for overnight stays, kiosks and a small prayer room, plus a paved loop road around the shore that is closed to cars and used for walking and cycling. The handsome old timber house at the water's edge is a state guesthouse run by the Ministry of Agriculture and Forestry, so do not expect to go inside; shoot it from the far bank with its reflection instead. All of this makes Gölcük unusually easy with a family. The loop is flat and pushchair-friendly, there are no stairs and no distances to speak of, and children get ducks to feed and anglers to watch. Getting there is simple. From Bolu town centre drive about 13 km south on the Seben road, fifteen to twenty minutes on good tarmac. Without a car, Bolu Municipality's public buses run out from the town centre (services are thin on weekdays and more frequent at weekends, so check the current timetable), and the minibuses bound for Seben and Kıbrıscık pass the park entrance. The fee is paid at the gate under the state protected-areas tariff for 2026, 75 lira per person or 225 lira per car, and there is nothing to book in advance. When to come is the honest part. On July and August weekends the little lake fills with day-trippers from Istanbul and Ankara, barbecue smoke drifts through the trees and cars line the road, and what you get is a crowded picnic park rather than a piece of wilderness. Go on a weekday, in October when the colour turns, or after a winter snowfall with chains in the boot, and you will see why people make the three-hour run from Istanbul for a pond with a 1.3 km shoreline. If you have to choose between Gölcük and Lake Abant, Abant is bigger and finer; Gölcük is closer and lighter.
A flat, car-free 1.3 km of paved path where the wall of forest doubles itself on the water, easy with pushchairs and bikes.
In October the beech flares orange against the pines; in winter the whole basin goes white and far quieter.
The old state guesthouse on the shore is closed to visitors, but from the far bank with its reflection it is the park's best photograph.
Bolu–Seben road, 13 km south of Bolu
Abant. It is far bigger, more beautiful and ringed by open meadows, and it fills a proper half-day. Gölcük is nearer town, smaller and quicker, a good two-hour stop on the way to Seben or a warm-up before Abant, but not a substitute for it.
Yes, provided you go on a weekday and in the morning. It is several degrees cooler than Istanbul at this altitude and the flat loop is safe for pushchairs and small legs, but a summer weekend means crowds, barbecue smoke and cars along the road, and most of the charm goes with them.
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