Castle History

Overlooking the Lenne River from a steep wooded hill, this imposing fortress has guarded its corner of Westphalia for centuries. Altena Castle was founded in the early 12th century by the Counts of Berg, marking the rise of Altena as a regional power center. The castle's position allowed control over important trade routes through the narrow river valley below. Thick curtain walls and towers were built to resist sieges and demonstrate noble authority. Over time, the stronghold became the ancestral seat of the Counts of the Mark, a dynasty that shaped the region's medieval politics. Unlike many castles, it was never completely abandoned, helping preserve much of its original structure. In the 19th century, the ruins were carefully restored during the Romantic movement's fascination with the Middle Ages. The castle gained unexpected international significance in 1914 with the opening of the world's first permanent youth hostel within its walls. This innovation transformed the fortress from a symbol of feudal power into one of cultural exchange and travel. Today, museums inside the castle explore regional history, medieval life, and the youth hostel movement. A modern elevator carved into the rock makes the hilltop site accessible while preserving its historic setting. The castle's towers offer panoramic views across forests, rivers, and the town below. Legends and local folklore surround the site, enriching its historical atmosphere. Its blend of medieval architecture and modern reuse highlights how historic structures can evolve without losing identity. The castle stands as a rare example of a fortress that has continuously reinvented its purpose across nine centuries.