A warm sea breeze stills as you step out of the van in Phan Thiet; the fishing harbor keeps its slow business—nets, boats and a chorus of gulls—while inland Ta Cu Mountain rises with a green, confident silhouette. The tour moves from human-scale history to mountain-scale calm: Po Sha Nhu (Poshanu) Cham Tower sits on a low ridge, its brickwork bearing the quiet geometry of an ancient kingdom. The road then opens to Van Thuy Tu Palace beside the port, where the whale’s skeleton dominates a shrine that honors the town’s seafaring lifeblood.