Working with Cadw, Wide Sky Design has completed the first of a number of new exhibits at Caerphilly Castle. As visitors enter the Inner East Gatehouse history comes to life before their very eyes. The fabric of the castle rumbles and shakes as chains begin to lift the mighty weight of a portcullis. The portcullis appears through an opening in the floor and rises up the wall right in front of them. Horses gallop through the archway below, then suddenly the portcullis drops back through the floor and bangs into place to protect the castle once more.