I got these little mausoleums as part of the Mortal Realms magazine collection. I haven't actually been collecting it: I just bought this issue (and one other) because it seemed like a good deal.
I plan to use these in games of 40k, since they have the appropriate amount of gothic adornments and skulls!
A basic paint job, as I normally do with scenery. I usually keep the colour scheme muted too, so that models stand out when placed next to them on the table.