Altena Castle
★★★★☆
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Altena Castle was erected by the early Counts of Berg in the early 12th century. Eventually, the House of Berg abandoned Altena and moved their residence to Hamm.
In 1912, Richard Schirrmann established the world's first youth hostel within the castle, which is still in use today.
In 1912, Richard Schirrmann established the world's first youth hostel within the castle, which is still in use today.