The Richthofen Castle, an iconic relic of Denver history, is under contract for sale.
If the deal closes, it will mark the end of 14 years of on-and-off-again efforts to sell the 35-room estate that was built by the uncle of Baron Manfred von Richthofen, better known as the Red Baron flying ace of World War I.
Baron Walter von Richthofen, a Prussian immigrant turned Colorado mining baron, conceived the idea for the limestone castle in the 1870s and finished it in 1887.
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