United States National Register of Historic Places |
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As Sombreru Pillbox I
| NRHP ID: 88001883 |
| Wikidata ID: Q20730734 |
| Multiple property submission: Japanese Coastal Defense Fortifications on Guam TR |
| Location (in/near): Tumon, Guam |
| Listed: 1991-03-04 |
| Role: Site |
| Significance region: National |
| Significance area(s): Engineering; Military |
| Criteria: A (event); C (architecture/engineering) |
Data from United States Park Service and Wikidata