London based practice Juice Architects has unveiled designs for an offshore visitor centre as part of the proposed tidal lagoon for Swansea Bay, Wales. A series of overlapping shells are sculpted to form a bowl like structure, providing shelter from the wind and waves of the Welsh coast. Sat on a manmade island platform at the end of a collection of land piers, the building will act as a cultural and educational base housing public galleries, a café, a lecture theatre and exhibition space with working turbine propellors visible through the the ground floor gallery. As an entirely self sufficient building all energy will be captured from renewable sources.