Medieval Lead Horseman

Medieval Lead Horseman is a treasure in Uncharted 3: Drake's Deception found in The Citadel.

Once reunited with Chloe and Cutter and completing a firefight with some agents, you will come to a large metal gate. Cutter will help you lift it. Once through, before heading up the spiral staircase, stick to the left and you will find the treasure on a windowsill.