Complex sentence: In nowadays Austrian Weitersfelden, the noble Christoph von Haim made a great rebuilding of Burg Reichenstein in the late 1560s, and on 6 June 1571, he was assassinated.
Split into simpler sentences: In nowadays Austrian Weitersfelden, the noble Christoph von Haim made a great rebuilding of his castle, Burg Reichenstein, in the late 1560s. On 6 June 1571, he was assassinated.