The creeper arches were iconic buildings in Forgeheart before the remodeling. Actually, only two of the four arches sported creeper reliefs, at warp north and warp south. The warp west arch was more stylized and curvy, with a large eagle or something statue on top. The east arch had more pillars and pilasters than carvings. From the pictures I just found and posted, it looks like the arches were actually from the west area of the Golden City, and were expanded upon in Forgeheart. The spaces in Forgeheart that they occupied are now taken up by the Train Stations.