The Weathering Continent (1992) Anime Watch

Three adventurers—a warrior, a priest, and a young woman—traverse a land devastated by centuries of environmental calamities searching only for a way to survive. In their journeys they stumble across first the remains of a band of desperate treasure-hunters, and then the treasure they were seeking: Azec Sistra, the legendary City of the Dead. Unfortunately, the bandits responsible for slaughtering the treasure-hunters have also found their way to the city, but more worrisome still are the guardians which protect Azec Sistra from those who would violate the spirits at rest there...