{"nrhp_refnum":"66000692","name":"U.S.S. OLYMPIA","other_names":[],"category":"structure","location":{"address":"Pier 40, at foot of Chestnut St.","address_restricted":false,"city":"Philadelphia","county":"Philadelphia","state":"PA","lat":39.94351812700006,"lon":-75.14102476599999,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":true,"nhl_designated_date":"1964-01-29","areas_of_significance":["Military"],"significance_levels":["national"],"summary":{"what_it_is":"The U.S.S. Olympia is a steel protected cruiser of the U.S. Navy, built by the Union Iron Works of San Francisco in 1890-1893 and now moored at Pier 11 North on the Delaware River at Philadelphia. It is the ship's present location in the Philadelphia area that the nomination describes.","why_significant":"The nomination argues the ship is significant as Commodore George Dewey's flagship, which led the Asiatic Squadron to victory over the Spanish fleet in Manila Bay on May 1, 1898. It is also described as the oldest surviving steel ship of the U.S. Navy and the last of the Great White Fleet.","narrative":"Built by the Union Iron Works of San Francisco between 1890 and 1893, the U.S.S. Olympia was the largest of four protected cruisers authorized by Congress in 1888. Commissioned in 1895, she carried four eight-inch guns in a pair of cylindrical armored turrets and reached 21.7 knots on her trial run, faster than any previous U.S. cruiser. In 1898 she served as Commodore George Dewey's flagship. On May 1 of that year, with Captain Charles V. Gridley commanding, she led the American squadron into Manila Bay and helped destroy the Spanish fleet, a victory that marked the emergence of the United States as a naval power. Later service included Caribbean duty, midshipman cruises, and in 1921 the transport of the Unknown Soldier's body. She was decommissioned in 1922, and after a 1955 acquisition by private groups she was restored and moored at Philadelphia, where she is preserved as the oldest surviving steel-hulled ship of the U.S. Navy.","period_of_significance":"c.1898","architect_builder":"Union Iron Works of San Francisco (builder)","architectural_style":null,"criteria":[],"status_note":"Restored to its 1898 appearance and maintained by the Cruiser Olympia Association; the eight-inch gun turrets removed in 1916 were replaced with facsimiles.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:29.825374-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/66000692_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000692/99608c380f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000692/99608c380f-1600.webp","licence":"CC BY-SA 4.0","author":"颐园居","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:OLYMPIA_(C-6)_in_Philadelphia_20240529.jpg\" rel=\"noopener\">颐园居</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:OLYMPIA_(C-6)_in_Philadelphia_20240529.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994357","wikipedia":"https://en.wikipedia.org/wiki/USS_Olympia_(C-6)","wikidata":"https://www.wikidata.org/wiki/Q1917116"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/u-s-s-olympia-66000692/"}