Yeah, but along the way you'd lose an ephemeral something. You'd stop having a single place in space frozen in time, and start having a collection of artifacts in a museum. Artifacts from the first World War are not so scarce as a room unchanged for a century.

You can certainly keep the room intact.

In Oslo there's a museum called Norsk Folkemuseum [1] (Norwegian Museum of Cultural History) that includes 160 buildings that were dismantled and moved - some of them from other parts of the country.

Ranging from a stave church built ca. 1212 [2] that was moved to the present location in the 1880's, to a collection of five buildings built in the 1800's in an old part of Oslo that were moved to the museum when that part of Oslo was re-developed in the 1960's.

[1] http://www.norskfolkemuseum.no/en/

[2] http://en.wikipedia.org/wiki/Gol_Stave_Church

Of course but the chance of that room to be changed, destroyed, dismantled etc is quite hight as it relies on owner's good will and luck.

Also, you could visit it !

Like the famous untouched apartment in Paris. Never really understood what it became except they sold painting they found in it.

http://www.telegraph.co.uk/news/worldnews/europe/france/8042...

I visited the Getty Museum this summer and found the displayed rooms of European apartments quite great and interesting, as I was fascinated by the Napoleon III ones at the Louvre.