In the December 2010 issue of the official Sims3 Magazine in Germany there is the famous Basilius Church from the Kreml and the wondrful Katharinenpalace.
You can upload it with your SIMS Launcher and place it in your City... your Sim needs 562771 simoloneons to buy the palace empty and 1288452 simoloneons to buy it with furniture !!!
The Bassileus Church is a community building with some Art inside to explore.
Greetings
guinevere