The Lanzerwald is a forest to the north and the west of Sankt Ludwigshafen. There some discussion about the origin of the name, but it is often said that the forest is named after the ancient Alexandrian city Lancôme, whose ruins are in the forest. Another popular explanation is that the wood from the forest was used for making lances of high quality, but very little historic evidence supports this theory. Part of the forest lies on the territory of the Republic of Sankt Ludwigshafen, but most of it lies in the Green. The forest is part of the broadleaf tree mixed coniferous forest ecoregion of eastern Cibola. The Republic of Sankt Ludwigshafen assumes stewardship over the part of the forest that lies on its territory and only allows limited logging that avoids soil degradation, tree monocultures and wide open roads that would allow an armoured attack on the city of Sankt Ludwigshafen. The protection of the forests is on of the key tasks of the Dragonerkorps Ludwigshafen, which regularly patrols the forest.
Two major ruins lie in the north of the Lanzerwald. On the coast lies the former city of Erazmhafen, which was inhabited by Alriggian colonist during the Alriggian period of Sankt Ludwigshafen's history. Roughly a hundred kilometres west of Erazmhafen lies the ancient Alexandrian city Lancôme. Both sites are maintained by the Republic of Sankt Ludwigshafen as archaeological heritage and protected against plunderers.