You should already be aware of the sheer quantity of mysterious "fires" that suddenly happen to old world buildings. Well I'm sure you'd be thrilled to know that on the official Smithsonian website there is a doctored photograph of the Smithsonian Castle complete with fake fire and smoke. (LINK)

Color Image of the Smithsonian Castle on Fire, by Gardner, Alexander 1821-1882, January 24, 1865, Smithsonian Archives - History Div, SIA2013-08351.

The above denoscription doesn't quite admit that the photograph is faked, does it?

Reports focused on the destruction of the Smithsonian's treasures, such as art works, scientific specimens, Smithson's personal papers, and records of the Institution's early work.