I'm really bad at finishing things. I tend to map an area up to a certain level and then move on to some other project. Thus there is very little that I consider "complete" in my countries.
I surprised myself over the weekend by completing a major theme park in Palmeras Grises, DS, Ardisphere, to a very high level of detail. It's sort of based on the US "Sea World" locations, but I made sure to make it different from those parks in layout and detail, too.
Anyway I'm quite pleased with it.