The Titus Temple is a strange place that you can explore in Monster Rancher 1, high up in the Kamalaku Mountains to the north. It has artifacts that help unlock Monol and Golem, and includes a magic mirror that helps unlock Magic. It has a small "guard house" at the front and a large wall surrounding the outside of the grounds.
This temple design is very similar to the tower built on Tower Island. While the other tower was dedicated to Egyptian-type gods, those who worshipped at the Titus Temple worshiped an angel-like deity. It is also possible that the tower was commissioned by Fleria.