Exploring the Enigmatic Portal Across Magical Realms and Cities

magical portal between cities realms worlds kingdoms, circular portal, ring standing on edge, upright ring, unconnected ring, ring by itself, freestanding ring, ring touching ground, hieroglyphs on ring, complete ring, ancient roman architecture, turned sideways view, futuristic cyberpunk tech-noir setting, hotels, office buildings, shopping malls, large wide-open city plaza, monumental statuary