"Don't touch anything", Kieran Tames said as his colleague used an electric screwdriver to remove a plank of wood from an opening in the cooling tower's wall.
Stepping through the door, the reinforced concrete walls soar 114m high, so curved the sky looks like an oval until you're stood in the middle. Kieran is development director at Peel NRE, a redevelopment company that bought Fiddler's Ferry Power Station from energy company SSE Thermal at the end of June 2022.
He told the ECHO: "You don't expect a space this vast. Looking at it from the outside, it looks like a busy structure, like there might be a lot going on inside. When you come in, you see a vast open space. They're just impressive structures, aren't they?"