Waiting in line to visit a clock is a paradox of wasted time folding in upon itself. Of course, when that clock is a 600-year-old marvel of medieval engineering it's worth it. However, this skip-the-line ticket gets you right to the front of the line, so you can visit the Gothic clock tower, and see the insides of the world's oldest operational astronomical clock.Time flies when you're having fun, so make sure you get into the fast lane to see Prague's world-famous Astronomical Clock. Meet your guide in the quaint Old Town Square to pick up your tickets. Rain or shine, the guide will be holding an open blue and white umbrella. And then visit the clock. Every hour a small trapdoor opens and Christ himself marches out, followed by his disciples. The Grim Reaper also rings a bell - checking to see whose time has come (unsurprisingly, everyone shakes their heads 'no'). There are also planetary motion, the zodiac and more on the clock - and 75% of its parts are original - like original.With your tickets, you'll get to skip the lines and take the stairs or an elevator up the tower. From there you'll have amazing views over the Old Town Square and the rest of Prague's Old Town.On your way back down to Prague, you can think on the staying power of this clock. It's an appropriate occasion to call to mind the words of English essayist Henry Austin Dobson: we .That ought to encourage you to make the most of your time in Prague.