The museum is styled after a traditional Nair house, featuring classic wooden architecture and a red-tiled roof. It is here the long sword and axe, symbolizing his status as a royal official before his conversion are displayed.

It displays oil paintings depicting pivotal moments in the life of St. Devasahayam as well as artefacts of his time. The exhibits provide insight into the cultural and religious milieu of 18th-century Travancore, helping visitors understand the context of his martyrdom.