Oberhofen Castle

Oberhofen Castle stands on the southern shore of Lake Thun in the Bernese Oberland, between the town of Thun to the west and the village of Spiez to the east, at a point where the lake narrows and the mountains behind the southern shore begin to rise toward the high Alps. The castle occupies a position that is aesthetically deliberate: it sits right at the water's edge, the walls dropping into the lake on the north side, with a formal garden running between the castle and the lake terrace. From the water, arriving by the tourist steamer that still stops at the castle's own jetty, the building presents itself as the romantic image of a lakeside castle — towers, pointed roofs, crenellated walls reflected in the lake — with the Bernese Alps as backdrop.

The site has been fortified since before the current castle was built. A high medieval hill fort called Balm Castle occupied the ridge above the village, offering defensive altitude but no lakeside access. The Eschenbach family, who inherited the lakeside property around 1200 through a marriage with the Wittelsbach line, made the decision to build a new castle directly on the shore rather than on the ridge — trading defensive height for lakeside access, a choice that reflected the shift from purely military architecture toward the combined defensive-and-residential function of the High Medieval castle. The moat on the landward side compensated for the loss of natural elevation.

The Eschenbachs' connection with Oberhofen ended badly. In 1308, Walter von Eschenbach was one of the assassins of Emperor Albert I of Habsburg — a political miscalculation that led directly to the confiscation of the family's Swiss properties. The castle passed to the Habsburgs in 1306 (some sources suggest earlier, as payment for political debts) and was administered as an imperial possession through the late medieval period. Habsburg control of the Swiss territories was progressively eroded through the 14th century as the forest cantons and their allies consolidated Swiss independence: the battle of Sempach (1386), where Duke Leopold III of Habsburg was killed by Swiss confederate forces, was the decisive military event, and Oberhofen came under Bernese control in the years that followed.

As a Bernese bailiff's seat, the castle served an administrative function through the 15th to 18th centuries — the bailiff governed the surrounding territory from here, collected taxes, administered justice, and maintained the fabric of the building as a working governmental residence rather than a private home. This administrative period left no dramatic architectural changes but maintained the castle in good structural condition through the period when many Swiss medieval buildings were falling into disrepair.

The Stiger family purchased the castle in 1651 and began the transition from bailiff's seat to private residence. Their sale to the Pourtalès family in the early 19th century set up the most architecturally consequential chapter in the castle's modern history. Gustave-Adolphe de Pourtalès undertook a comprehensive renovation between 1849 and 1852 that transformed the castle's appearance: the neo-Gothic tower, the romantic silhouette, and — most individually — the interior's eclectic decorative programme, which included a Turkish-style smoking room fitted with Moorish tilework and an Ottoman-influenced divan. The Moorish smoking room was a fashionable aristocratic gesture of the period — the Brighton Pavilion, Leighton House in London, and several Rhineland villas of the same decades reflect the same Orientalist taste — but it remains unusual in a Swiss medieval castle context.

The Bernese Historical Museum acquired Oberhofen in 1954 and established it as a branch museum displaying Swiss noble domestic life across six centuries, using the castle's own rooms as the exhibition space. The result is a visit that moves through Gothic halls, Baroque reception rooms, Romantic-era bedrooms, and the Victorian domestic interiors of the Pourtalès period — a temporal sequence through the material culture of Swiss aristocratic life in a building that was actually inhabited throughout.

The lake view from the castle's terrace garden is a significant part of the visit. Lake Thun is a glacial lake of extraordinary clarity — at 18 kilometres long and 186 metres deep, it retains its alpine water quality in a way that lowland Swiss lakes do not. On clear days, the Eiger, Mönch, and Jungfrau are visible above the Bernese Oberland to the south. The formal garden, running between the castle walls and the lake jetty, was redesigned as part of the Pourtalès renovation and maintains the romantic-era planting scheme.

The Lake Thun 3 Castles Tour from Interlaken (t1067418) covers Oberhofen, [Spiez Castle](/castles/switzerland/spiez-castle), and Thun Castle in a single half-day with included entry tickets — the most efficient way to see all three major Lake Thun fortifications in one visit. [Château de Chillon](/castles/switzerland/chateau-de-chillon), at the eastern end of Lake Geneva, is the reference point for Swiss lakeside castle architecture: larger, more famous, and architecturally more significant, but sharing with Oberhofen the water-edge position and the medieval-romantic combination that defines this Alpine castle type.