Schloss Drachenburg - Credit: Wikimedia Commons
Schloss Drachenburg or Drachenburg Castle is a private villa styled as a palace and constructed in the late 19th century. It was completed in only two years (1882–84) on the Drachenfels hill in Königswinter, a German town on the east bank of the Rhine, south of the city of Bonn. Baron (1833–1902), a broker and banker, planned to live there, but never did. Read more on Wikipedia
Source: en.wikipedia.org