Rovaniemi sits right on the Arctic Circle - an invisible line around the top of the world where, far enough north, you cross into the polar regions. A thick painted line on the ground at the Village marks exactly where the Arctic Circle runs. Children love hopping back and forth across it.
Santa's office is open every single day. You walk through a long wooden corridor with a giant clock pendulum swinging overhead, and when you reach the end, Santa himself is sitting in a big chair, ready to chat. He speaks lots of languages - Finnish, English, Japanese, German, Chinese - because children come to see him from all over the world.
The Main Post Office in the Village receives over 500,000 letters every year, from more than 200 countries. Each letter is opened by Santa's elves, who try their very best to write back. There is a wall covered in letters from children, in dozens of different scripts and alphabets.
Around the Village, snow stays on the ground for about half the year. There are reindeer pulling sleighs, husky dog rides, and a glass igloo hotel where you can sleep and watch the Northern Lights from your bed. Even when there is no snow in summer, the Village stays open - Santa just swaps his big coat for something a bit lighter.