Devils Postpile National MonumentvsSpringfield Armory National Historic Site

Devils Postpile National Monument has a higher Total Area (800 vs 55 acres), while Devils Postpile National Monument has a higher Annual Visitors (2025) (99,652 vs 13,934 visitors), while Springfield Armory National Historic Site has a higher Longitude (-73 vs -119 °).

Location & Classification

National Monument

Designation

National Historic Site

CA

State(s)

MA

38

Latitude

42

-119

Longitude

-73

Size & Visitation

800

Total Area

55

99,652

Annual Visitors (2025)

13,934

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Data sourced from NPS Boundary & Tract Data Service (US Government (public domain)), NPS Visitor Use Statistics (2025) (CC0 (public domain)), NPS Acreage Report (Q1 2026) (US Government (public domain)).