In an endless circle, it presents unknown twins, while you, with eager eyes, search for your own reflection.

It divides the world's map into invisible segments, and throws your internal clock out of sync when you cross it. Solve the riddle → The book you show to travel, but which is carefully scrutinized before the world allows you in. Solve the riddle → I can be worth a lot on one side of a border and less on the other, even though I look the same. What am I? Solve the riddle → It brings you closer, yet often keeps you apart. What is it? Solve the riddle → What is a standing box that gladly swallows plastic and spits out paper, but never remembers your face? Solve the riddle →