{"nrhp_refnum":"83002280","name":"Sun Oil Building","other_names":[],"category":"building","location":{"address":"1608-1610 Walnut St.","address_restricted":false,"city":"Philadelphia","county":"Philadelphia","state":"PA","lat":39.94964956900003,"lon":-75.16830895099997,"geom_source":"nps_gis"},"listed_date":"1983-08-25","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"The Sun Oil Building is a 19-story office building at 1608-10 Walnut Street in Philadelphia, occupying the full depth of the block between Walnut and Chancellor Streets. It was begun in 1928 by developer Joseph Greenberg as a speculative office building and completed as the headquarters of the Sun Oil Company.","why_significant":"The building is argued to be an important skyscraper design marking a transition from 1920s art deco toward modernist vocabulary, with two architecturally distinct facades, the Walnut Street front in art deco style and the Chancellor Street rear as an early adaptation of International Style ideas. It is also tied to the Sun Oil Company's headquarters role and to J. Howard Pew, who ran the company from the 19th-floor suite for about half a century.","narrative":"Built on Walnut Street between Walnut and Chancellor Streets in Philadelphia, this 19-story office building was begun in 1928 by developer Joseph Greenberg as a speculative office tower. Sun Oil Company became the principal tenant during design, and three stories were added to house its offices. Architects Tilden, Register and Pepper designed the building, which has a classicizing art deco Walnut Street facade with vertical piers and a New York set-back top, and a flat rear facade on Chancellor Street that anticipates the International Style. The building is significant as an early skyscraper showing a transition from 1920s art deco toward modernism. It also served as the headquarters of Sun Oil, a major petroleum company, and as the office of J. Howard Pew, who ran the company from the 19th floor for decades. The lobby sequence of marble, bronze and terrazzo is an important art deco public space.","period_of_significance":"1928-1930","architect_builder":"Tilden, Register & Pepper (architects)","architectural_style":"Art deco; early International Style rear facade","criteria":[],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:33.422412-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/83002280.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/83002280/48a0826c27-800.webp","url_1600":"https://nationalhistoricalregister.com/media/83002280/48a0826c27-1600.webp","licence":"Public domain","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Sun_Oil_Building_Philly.JPG\" rel=\"noopener\">Smallbones</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Sun_Oil_Building_Philly.JPG"},"district":{"nrhp_refnum":"87002203","name":"Center City West Commercial Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/center-city-west-commercial-historic-district-87002203/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71997100","wikipedia":"https://en.wikipedia.org/wiki/Sun_Oil_Building","wikidata":"https://www.wikidata.org/wiki/Q7638424"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/sun-oil-building-83002280/"}