Monument  Rachel Whiteread, 2001    Transparent resin cast of the actual plinth, standing upside-down and 14ft high.

Trafalgar Square's Fourth Plinth

Resin cast of human heart blood vessels

Resin cast of human heart blood vessels. This model was achieved by injecting liquid plastic into a real heart. Plastic resin fills the blood vessels and, once the resin sets, the tissue is dissolved away leaving a perfect replica of the blood supply ~