With its dreamy spires, mock battlements and square clock tower, Schloss Drachenburg, which stands on a wooded hill high above the river Rhine, looks like a cross between a medieval castle, a Gothic cathedral and Big Ben. Topic Germany According to Norse myth, Siegfried slayed a dragon just a little farther up the mountain. This spectacular building, a jumble of architectural styles, was erected in less than three years in the late 19th century by a wealthy stockbroker.