Vestige map › Illinois › Alton Military Prison Site

Alton Military Prison Site

MilitaryModerate difficulty● Yellow hazardIllinois

Military documented in OpenStreetMap. Verify current condition, ownership and legal access before visiting.

Site typeMilitary
StateIllinois
Coordinates38.8914, -90.1896
Difficulty · ModerateSome effort — hiking, navigating fences or rough terrain.
Hazard · YellowStandard caution — typical abandoned-structure risks: weak floors, debris, broken glass.
Light todaySunrise 06:19 · sunset 19:48 (local) — golden hour is the first and last hour of that window
Conditions today72–84°F · 32% precip chance · wind to 8 mph
Open Alton Military Prison Site on the interactive map →

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Vestige documents abandoned & historic places for education and preservation. Always obtain permission before visiting and follow local law.