Design a postage stamp featuring symbols of the Universal Postal Union. The design includes images of a carrier pigeon and a mailman on his airbike equipped with ice packs. Additionally, a world map is depicted. The intricately detailed stamp showcases a vibrant color palette and intricate patterns, exuding a sense of historical significance and global connectivity. This exquisite piece of art is a stunning representation of the postal system's importance and the world's interconnectedness