Best castles around Fléron include a range of historical sites, from military fortifications to transformed estates. While the municipality of Fléron itself is known for its defensive structures, such as the Ancien Fort de Fléron, these are primarily historical military sites with limited public access. The region offers a diverse collection of castles, châteaux, and historical buildings that reflect centuries of history and architectural evolution. These landmarks provide a glimpse into the area's past, from medieval origins to later transformations.
…Last updated: July 1, 2026
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This is the former palace of the Prince-Bishops!
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Always interesting to read. You will definitely learn something.
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The Château de Colonster is located in Sart-Tilman, on a rock overlooking the Ourthe valley, on the edge of the city of Liège. The castle and its park have been the property of the University of Liège since 1963. The first references to the castle date back to the fourteenth century. The castle owes its current appearance to Maximilian-Henry of Horion, Count of Horion. The interior of the castle is the work of artist Paul-Joseph Delcloche. In 1966, a fire destroyed a large part of the castle. The restoration and conversion took place under the direction of the architects Henri Lacoste and Jean Opdenberg.
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The park features works from the Musée en Plein Air, including the two sculptures "Movement through Time and Space" (Stainless steel / Artist: Thierry Bontridder) and "Joie de vivre" (Bronze / Artist: Rik Wouters). Source: https://www.campus.uliege.be/cms/c_2223166/en/b25-colonster-castle
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The ruins of the small castle are picturesque
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The complex includes several adjoining courtyards. The first courtyard is surrounded on all four sides by galleries with Gothic cross vaults resting on 60 columns. They are all designed differently and richly decorated with fantastic human figures and grotesque masks. They were probably inspired by the humanist way of thinking, the Renaissance and the discovery of the New World. Inside the building, numerous pieces from the time of the prince-bishops have been preserved, including their former private apartments. Source: https://www.visitezliege.be/de/offre/palais-des-princes-eveques#containerDescription
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Witness to the rich metallurgic past at this location and elsewhere in the valley.
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The Palace of the Prince-Bishops in the Belgian city of Liège is located on the Place Saint-Lambert in the heart of the city. Until the end of the 18th century, it was opposite the Saint-Lambert Cathedral, which was destroyed by revolutionaries. The current building, with its imposing façade, is the third building to house the Prince-Bishops of Liège. A first palace was integrated into the fortifications by Prince-Bishop Notger, but that building disappeared in a fire in 1185. It was rebuilt by Rudolf of Zähringen. This construction suffered greatly during the plundering of the city by the troops of Charles the Bold and also burned down in 1505. Everhard van der Marck, who became prince-bishop in 1505, began the construction of a new palace, the construction of which he entrusted to Arnold van Mulken in 1526. Construction lasted until the end of the 16th century. The very special courtyard (Cour d'Honneur) is surrounded by a colonnade with sixty Renaissance columns of different types. Some of the capitals are decorated with masks and heads with feather headdresses based on the Aztec model. Apparently the bishop was fascinated by the treasures of the Aztec empire that had been conquered in 1521. The south facade was completely renovated after a fire in 1734, under the direction of the Brussels architect Johannes Andreas Anneessens. In 1849, a new wing was built on the west side to house the provincial government. In 2010, the Justice Department and the provincial government occupied the former palace.
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Around Fléron, you'll find a mix of military fortifications, historical estates, and transformed palaces. While the Ancien Fort de Fléron within the municipality is a significant military bunker from the late 19th century, it is largely a private residence with limited public access. However, the broader region offers more traditional castles and historical buildings. For example, Colonster castle, originally a 14th-century fortress, was transformed into an 18th-century pleasure palace. The Prince-Bishops' Palace, Liège, is a grand Gothic civil building now housing the Palace of Justice.
Yes, several castles combine historical interest with beautiful natural surroundings. Colonster castle, for instance, is set within a 50-hectare park overlooking the Ourthe valley and is part of a nature reserve. Similarly, the Abbey of Brialmont, housed in a castle perched on a majestic rock, features a beautiful park and offers views over the Ourthe valley.
Yes, the region has significant military history. The Fort Battice Memorial is a notable site, one of the four forts built before WWII. It offers a museum and guided underground tours on the last Saturday of the month from March to November, detailing its role in the Battle of Liège. The Ancien Fort de Fléron itself is a historical military bunker, though public access is very limited.
The Prince-Bishops' Palace, Liège is categorized as family-friendly and offers an impressive architectural experience in the heart of Liège. While not all castles are explicitly listed as family-friendly, sites with parks like Colonster castle and the Abbey of Brialmont can be enjoyable for families who appreciate historical settings and outdoor spaces.
The area around Fléron offers various outdoor activities. You can find numerous hiking and cycling routes. For hiking, consider routes like the 'Chaudfontaine Station – Chaudfontaine Thermal Springs loop' or the 'Village Square of Forêt – Saint Hadelin's Church loop'. For cycling, there are routes such as the 'Fort Barchon – Julienne Valley Ponds loop' or the 'Herve Viaduct – Fort Battice loop'. You can explore more options on the hiking around Fléron guide or the cycling around Fléron guide.
Yes, Fenderie Castle in the municipality of Trooz, built in the 17th century, has a strong connection to the region's metallurgy past. It was a site where workers processed iron bars for various industries, including armory, and it even features a hydraulic mechanism along the Vesdre river for electricity production.
While specific opening hours vary by site, generally spring, summer, and early autumn offer the most pleasant weather for exploring both the castles and the surrounding hiking and cycling routes. For military sites like Fort Battice Memorial, guided tours are available from March to November, which aligns with favorable outdoor conditions.
Visitors appreciate the rich history and architectural diversity of the sites. Highlights like Colonster castle are valued for their transformation from fortresses to pleasure palaces and their integration into beautiful natural landscapes. The Prince-Bishops' Palace, Liège is admired for its grand Gothic architecture. The military fortifications offer a deep dive into significant historical events.
Yes, the Abbey of Brialmont is a Cistercian abbey housed within a castle structure. It combines religious significance with historical architecture and a beautiful natural setting, including a park and a mushroom farm with a shop selling local products.
Komoot offers several hiking routes in the region. You can find trails that explore the natural beauty and historical landmarks. For example, the 'Forest Path Near Liège loop' is an easy option, while the 'Chaudfontaine Station – Chaudfontaine Thermal Springs loop' is a moderate route. For more detailed options, refer to the hiking around Fléron guide.
While there is an Ancien Fort de Fléron within the municipality, a more traditional 'Château de Fléron' exists in Marchin, a different municipality. This 15th-century fortified castle features a park, ponds, and an 18th-century icehouse. Information on its public visitability is not readily available, as the property has recently been on the market.


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