The Prague Astronomical Clock – or Prague orloj – is the third oldest astronomical clock in the world, and the oldest one still operating. But imagine if this feat of mechanical engineering did more than mark the passage of time… Imagine it could actually take you back in time! Gather your teammates, friends, and family members together and show us the time period you would travel back to if this historic clock warped the time continuum. Note: You and your time-travelling companions must be pictured in front of the clock.