Advice for making a custom building?

[templeofninpo]

What do I have to learn to be able to make this building into an object that can be manipulated in the NVGeck?

or

Do you have any ideas how I could construct a facsimile?

This is the legislative building in Victoria, BC. Mine will be post-apocolyptically dilapidated.

My experience with NifSkope is that I ran it once and looked dumbfounded at the screen for a few moments.

http://www.amazingvancouverisland.com/wp-content/uploads/2011/08/BC-Legislature-iStock_000014829893XSmall.jpg