Today’s deep thought: How much was the doorknob? (Andrew Morrell Photography /Creative Commons)

No word yet on the buyer. According to real estate blog Urban Turf, Halcyon House actually tops the list of most expensive homes in D.C., and the Georgetown home has a storied Washington history. Built in 1787 by the first Secretary of the Navy, it would go on to become the home to Mark Twain’s nephew, Albert Clemens, who thought perpetually rebuilding the house would extend his life — he even built a small crypt in one of the rooms. (No wonder it’s also held the title of “The most haunted house in Washington.”)

After that, it was a Georgetown University dormitory before re-entering the housing market in 2008 for $30 million. (View more photos from Urban Turf here.)

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