Petřín isn't the only one with a mirror maze.

In Brno you'll find one in the Letmo shopping centre, on the third floor. The advice about looking at the floor and it'll be easy fell apart very quickly. Specifically after the first wrong turn… and ending up trapped in a dead end. The floor isn't poured concrete or carpeted — it has a triangular pattern that makes orientation nearly impossible. The lighting completes the effect, turning on and off at irregular intervals. Eventually you do find your way out, after quite a bit of wandering and the occasional brush with a mirror (gloves are mandatory, by the way). The cherry on top is the second hall — the crystal one. Here glass panels are added on top of everything. Navigation is even harder. You can see further, you think you can walk forward because it makes sense to go that way… and then you can't. What follows is your forehead meeting glass. It's fun — brief, admittedly — but I enjoyed it a lot!