When you take a city that has great works in it, do you always get them? Or is there a percent chance the great works will be destroyed, like with buildings?
Also, can you loot great works of music (I know you can't trade them.)?
They do get destroyed if you have no room for them.
As far as I know if you have enough room, those extra things get moved to a nearest/fittest city with a appropriate slot.
Just a side note about capturing works: if you liberate a city with works in it, you do not get to keep them. This is unfortunate when going for a cultural victory, in that it puts you in the awkward position of NOT liberating a CS if you need the work for a theming bonus. (I still liberate by the way, I just groan and grouse about it.)
I always wonder what the heck Bogota is going to do with Monet's Water Lilies.
The most annoying thing is then I visit the city right after conquest and it houses a full set of artifacts, ie. a writing, a music piece and two painting, but when I annex or puppet it, some of these vanish.
To the best of my knowledge:
1) The AI tries as best as possible to move Great Works out of cities it's in danger of losing. It only starts seriously losing great works when it has more Great Works than it can house elsewhere.
2) Great Works are not destroyed by the conquering of the city, but can be lost if the buildings housing them in that city are destroyed, and you have no place to put them.
Just a side note about capturing works: if you liberate a city with works in it, you do not get to keep them. This is unfortunate when going for a cultural victory, in that it puts you in the awkward position of NOT liberating a CS if you need the work for a theming bonus. (I still liberate by the way, I just groan and grouse about it.)
I always wonder what the heck Bogota is going to do with Monet's Water Lilies.