We've been queuing in the dark and as we file into Durham Cathedral, we see the famous carved stone pillars before us already taking on changing colours as they begin to transform and the vaulted ceiling follows suit in a 'son et lumiere' - sound and light - show which is already in full flow.
This is Life, a touring immersive after-dark experience from a team of artists called Luxmuralis, which is running inside Durham Cathedral throughout each evening until Sunday. A series of dazzling projections, accompanied by music, it is showing the interior of the city landmark in literally a new light - and the result is stunning.
Entry is by pre-booked time slots and while the queue stretching in front of us along one length of Palace Green had looked off-putting when we arrived for Wednesday's opening night, it proved well-managed and was kept moving so that we found ourselves stepping inside the cathedral literally only a couple of minutes after our appointed time.