As I have searched around on the internet, I have found that many historic buildings in Russia are being destroyed.
Here are some of the sites I have looked on:
1. oiru.org
Society for the study of the Russian manor
2, www.save-spb.ru
Movement of Living City "brings together people who love St. Petersburg and indifferent to his fate. The aim of our
movement - to preserve the unique architectural appearance of our city
3.
http://community.livejournal.com/russkaya_usadba/ I may have this one wrong, but it is the LifeJournal Community in the section
architecture
Once you start looking around, you end up finding other sites. On my computer, Google translate automatically translates Russian to English.
Also
www.archi.ru