In 1911–1933, Onrust Island, an island located 14 km off the coast of Batavia (Jakarta), Dutch East Indies (Indonesia), went from being a military base to a quarantine station for Hajj pilgrims. Narratives about quarantine stations, especially in colonial site, often described by inadequate spatial conditions, while also possessed a disciplinary mechanisms. In context of Dutch East Indies’ Hajj quarantine, there were narratives beyond a pathogenic-quarantine discourse, such as political efforts to supervise the pilgrims’ political behaviour. This issue raises a question: How was, architecturally, the Onrust Island Quarantine Station's condition? Was it indecent? Was it possessed a disciplinary mechanism? This paper is a research on architecture history, which will use interpretive research methods on spatial conditions, by collecting data related to historical archives from the Onrust Island Quarantine Station and put it on the context of quarantine architecture.