Photo: Dosseman (CC BY-SA 4.0) · Source Bolu is a province midway between Istanbul and Ankara where nature and Ottoman towns meet. It has Lake Abant, which became a national park in 2022; Yedigöller with its landslide-dammed lakes; Gölcük with its lake house; the Kartalkaya ski resort; Mudurnu, with its Yıldırım Bayezid Mosque of 1374 and its mansions; Göynük, with the Akşemseddin Tomb; and Mengen, the land of master cooks. It has 27 registered geographical indications.
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12 places worth seeing in Bolu, from historic monuments to natural wonders, grouped by type. Open any of them on the map with a single click.
Photo: Dosseman (CC BY-SA 4.0) · Source An Ottoman town 52 km from Bolu that developed on the Silk Road; it has a well-preserved urban fabric of wooden mansions, a historic bazaar and traditions. Some of the restored mansions serve as accommodation.
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Photo: Wikimedia Commons (CC BY-SA) · Source Built in 1374 during Yıldırım Bayezid's time as prince governor of Bolu, this is one of the finest examples of early Ottoman architecture; the Yıldırım Bayezid Hammam of 1382 nearby also still stands.
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Photo: Muhsin Kadıoğlu (CC BY-SA 4.0) · Source A domed, hexagonal tomb in Göynük, built by Mehmed the Conqueror (Fatih) in 1464 for Akşemseddin, his teacher.
View on mapA single-balcony-minaret mosque with a wooden dome, built in 1331–1335 by Gazi Süleyman Paşa, son of Orhan Gazi; it is one of the most valuable Ottoman buildings in Göynük.
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Photo: Wikimedia Commons (CC BY-SA) · Source Opened in 1981, the museum displays archaeological finds from the Neolithic to the Ottoman period and an ethnographic collection of clothing, weaving and weapons from the Bolu region.
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Photo: Eyeintheair (CC BY-SA 4.0) · Source A landslide-dammed lake in the Mudurnu district, 35 km south-west of Bolu at an altitude of about 1,330 metres; the 125-hectare lake is 18 metres deep at its deepest point. It was declared Türkiye's 48th national park on 9 June 2022. In winter it freezes completely, starting from the shore.
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Photo: Nevit Dilmen (CC BY-SA 3.0) · Source Seven lakes formed when landslides blocked valleys, some of them connected underground, and beech forests reminiscent of a "sea of forest"; Türkiye's first farmed-trout production station was set up here in 1969. The lakes can be seen from the Kapankaya viewpoint.
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Photo: Elnur Ahmadov (CC BY-SA 4.0) · Source A 4.5-hectare forest lake 13 km south of Bolu at an altitude of 1,217 metres; the wooden lake house on the shore is the most photographed view in Bolu.
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Photo: Wikimedia Commons (CC BY-SA) · Source A narrow lake 1,100 metres long, 22 km east of Göynük at an altitude of 1,030 metres, formed when two landslides blocked the Gök Dere stream; it has walking trails and an accommodation facility.
View on mapThermal facilities 5 km south of the Bolu city centre, easily reached via the D-100 and the TEM motorway.
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Photo: Wikimedia Commons (CC BY-SA) · Source A ski resort in the Köroğlu Mountains in the Seben district, at an altitude of about 2,000–2,200 metres; snow depth sometimes reaches 3 metres, and the season runs from December to April. In summer there are highland walks.
View on mapBolu is a province in the interior of the Western Black Sea region, exactly halfway between Istanbul and Ankara, set among mountains covered with beech, fir and Scots pine forests. In antiquity it was part of the region of Bithynia; the Romans named the city on the Bolu plain Claudiopolis, and the name “Bolu” is thought to derive from the “polis” of that city. After Malazgirt (Manzikert, 1071) Turkmens settled in the area, and in the time of Orhan Gazi it was added to Ottoman territory by Konur Alp.
Bolu’s real wealth is its forests and lakes: Abant, Yedigöller, Gölcük and Sünnet, lakes formed when landslides blocked valleys, are nature spots in the province visited in all four seasons. Kartalkaya in the Köroğlu Mountains is one of the main ski resorts in Türkiye.
The province’s Ottoman towns are at least as valuable as its nature: Mudurnu, a trading town on the Silk Road, is known for its wooden mansions and for its mosque and hammam dating from the time of Yıldırım Bayezid; Göynük for the tomb of Akşemseddin, teacher of Mehmed the Conqueror, and for its traditional houses. In Mengen, whose name is synonymous with Türkiye’s tradition of master cooks, a Cookery and Tourism Festival is held every June.
Bolu has a transitional climate between the Black Sea and Central Anatolia: winters are cold and snowy, and summers are mild. Averages for 1929–2025 from the Turkish State Meteorological Service:
| Month | Avg. high | Avg. low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | 5.4 °C | −3.5 °C | 58 mm | 16 |
| February | 7.2 °C | −2.5 °C | 48 mm | 14 |
| March | 11.1 °C | −0.4 °C | 50 mm | 15 |
| April | 16.7 °C | 3.6 °C | 51 mm | 13 |
| May | 21.4 °C | 7.6 °C | 61 mm | 14 |
| June | 24.7 °C | 10.5 °C | 59 mm | 12 |
| July | 27.5 °C | 12.5 °C | 29 mm | 6 |
| August | 28.0 °C | 12.7 °C | 24 mm | 5 |
| September | 24.3 °C | 9.5 °C | 28 mm | 7 |
| October | 19.3 °C | 6.2 °C | 42 mm | 11 |
| November | 13.3 °C | 2.1 °C | 46 mm | 12 |
| December | 7.6 °C | −1.1 °C | 59 mm | 15 |
Bolu is beautiful in a different way in every season. October to November is when the autumn colours are most vivid at Yedigöller and Abant. The ski season at Kartalkaya runs from December to April; in winter Lake Abant freezes, starting from the shore. Summer nights are cool (average low 12–13 °C).
By road: Bolu is about 3 hours from Istanbul and 2 hours from Ankara on the Anatolian Motorway (TEM). The motorway passes through the 2,900-metre Bolu Mountain Tunnel, while the D-100 follows the historic Bolu Mountain pass.
By air: There is no airport in Bolu; Istanbul Sabiha Gökçen, Ankara Esenboğa and Zonguldak airports can be used.
Day 1 – The lakes: In the morning, a walk around the lake house at Gölcük; lunch on the shore of Lake Abant; in the evening, a Mengen-style meal in Bolu.
Day 2 – Ottoman towns: In Mudurnu, the wooden mansions, Yıldırım Bayezid Mosque and historic bazaar; in Göynük, the Akşemseddin Tomb and Gazi Süleyman Paşa Mosque. If time allows, Lake Sünnet.
Nature day: A walk among the lakes in Yedigöller National Park and the Kapankaya viewpoint.
With 27 geographical indications registered with TÜRKPATENT, Bolu is one of the richest provinces in Türkiye in culinary terms. The main ones are: Bolu fındık şekeri (hazelnut candy), Bolu manda kaymağı (buffalo clotted cream), Bolu patatesli ekmeği (potato bread), Bolu kabaklı gözlemesi (pumpkin gözleme), Bolu keşi, Bolu kızılcık tarhanası (cornelian cherry tarhana), Bolu kanlıca mantarı (Kanlıca mushroom), Bolu sarı patatesi (yellow potatoes), çivril fasulyesi (çivril beans), dağ fındığı (mountain hazelnuts) and Kıbrıscık pirinci (Kıbrıscık rice), all three with designations of origin, Mudurnu basma helvası, Göynük uğut tatlısı and dik börek, Gerede şakşak helvası, Mengen höşmerimi, kedibatmaz and kaldırık dolması. Among handicrafts, Mudurnu kaşık sapı (Mudurnu spoon handle) and Göynük tokalı örtme are registered.
Bolu province has 9 districts. Explore the places to visit, local dishes and transport in each one.
A Mengen dish with a registered geographical indication.
Dolma (stuffed dish) with a registered geographical indication.
Gözleme (stuffed flatbread) with a registered geographical indication.
A Göynük dessert with a registered geographical indication.
Halva with a registered geographical indication.
A sweet with a registered geographical indication.
The main stops are Lake Abant, Yedigöller, Gölcük Nature Park, Lake Sünnet, the mansions and Yıldırım Bayezid Mosque of Mudurnu, the Akşemseddin Tomb in Göynük, Kartalkaya, the Bolu Museum and the Karacasu hot springs.
Yes. Lake Abant and its surroundings were declared Türkiye's 48th national park on 9 June 2022.
October to November is best for autumn colours, December to April for skiing, and May to September for walking and the lakes.
The master cooks of Mengen, Bolu hazelnut candy, buffalo clotted cream, potato bread, pumpkin gözleme, Mudurnu basma helva and Göynük uğut dessert; the province has 27 registered geographical indications.
Kartalkaya is in the Köroğlu Mountains in Bolu's Seben district; the ski season runs from December to April.
Gölcük Nature Park is 13 km south of the Bolu city centre.
The information in this guide has been compiled from and checked against the sources below (last checked: 7 October 2026). If you spot an error, please let us know.