Architecture, Building and Structure Design Cultural Exchange Convention Centre by Mercurio Design Lab S.r.l. The Cultural Exchange is a large wedding hall, inspired by the famous Tiffany ring. The attractive site consists of a river and a range of low hills behind making up a series of conical formations. One of these hills has a hole through the middle and at night it looks like the moon, giving it the name, Moon Hill. The semi-circular wedding hall wraps around a large circular pond. The building, like a ring, lifts up to ‘support’ the diamond, which is the central hall, tapering away on either side so that the roof gradually drops down to meet the ground, forming a pathway around the lake.