Vienna is a city full of historical sites, exciting architectural styles and most importantly, it's not a giant metropolis. So it's the perfect candidate for a crazy Minecraft project.
Making a 1:1 scale version of the Austrian capital isn't something one can do over a few days. The folks over at MCVienna have been working on it for two years now and they don't want to miss a single detail. They add the actual blueprints of all the landmarks and buildings to the map and use them to rebuild everything perfectly.
It's an ongoing project, but the results, from a distance, are already looking absolutely fantastic.