This map is exactly what it sounds like - a big European city. The world is a little barren, and shrunk down, because there are limits, but otherwise this is a really fun and cool map to tinker around in. Someone with way too much time on their hands has gone through the trouble of rendering the entire planet in Minecraft so you can finally live out your dream of fending off zombies in the middle of the Sahara or building a giant tower in the middle of Kansas. It doesn't get any more real-life than this. Either way, it's an experience unlike any other. It's based in Paris, and includes several real-life locations that have been built out to an extreme degree - play through the adventure, or break the rules and just explore. So this isn't a seed, it's a full-blown adventure map, but I'm sure you can work around that, because this is one of the most detailed, intricate, and beautiful Minecraft maps around.
So go nuts populating, destroying, or exploring your alternate Earth. More importantly, it's got great biome diversity and a lot of build potential. Ok, so this isn't actually based on a real place, but it does look a heck of a lot like a weirdly distorted Earth. Whatever your aims are, here are some of the best Minecraft seeds based on real places on Earth. Maybe you want to build something new, wander around and explore, or demolish something real in an act of violent catharsis. In the vast world of Minecraft seeds, there's always something new for you to explore, even if that's a city you know and love.