Complex sentence: Although the building was designed as a palatial residence, by the end of the 18th century, "Schloss Beck" became a distillery for schnapps; it came into the possession of the Metternich family around 1850.
Split into simpler sentences: Although the building was designed as a palatial residence, by the end of the 18th century Beck Castle had become a distillery for schnaps. It came into the possession of the Metternich family around 1850.