{"nrhp_refnum":"77000293","name":"Forestiere Underground Gardens","other_names":["Forestiere Gardens"],"category":"structure","location":{"address":"5021 W. Shaw Ave.","address_restricted":false,"city":"Fresno","county":"Fresno County","state":"CA","lat":36.807104149000054,"lon":-119.88172606899997,"geom_source":"nps_gis"},"listed_date":"1977-10-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Agriculture","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A complex of underground rooms, grottos, courts and passageways, with planted gardens, on about ten acres at 5021 West Shaw Avenue in Fresno, California. Baldasare Forestiere, a Sicilian immigrant, dug and shaped it by hand from 1906 to 1946.","why_significant":"The nomination argues the gardens are widely recognized for originality and uniqueness, working as both architecture and walk-in sculpture. Forestiere designed it without plans, using hand tools and Roman arches, columns and domes of hardpan, mortar and cement. He also moderated the harsh climate with underground micro-climates and grafted citrus experiments.","narrative":"Beneath a ranch in Fresno's San Joaquin Valley lies a network of underground rooms, courtyards, grottos and tunnels carved by one man. Baldasare Forestiere, a Sicilian immigrant, began digging in the early 1900s to escape the region's extreme summer heat and kept working until his death in 1946. Using a pick, shovel and wheelbarrow, he shaped hardpan into arches, columns and domes, reinforced with mortar and cement. The complex includes his living quarters, planters, a fish pond, an aquarium with a glass bottom, and an automobile tunnel about 800 feet long. Skylights admit light to trees planted below ground, including citrus grafted with several varieties. He worked without written plans, controlling light, air and temperature to create milder micro-climates. About ten acres survive of a larger original parcel, with some areas deteriorated by erosion and neglect. The property is recognized for its originality, its sculptural qualities and the determination behind it.","period_of_significance":"1900-1946","architect_builder":"Baldasare Forestiere","architectural_style":null,"criteria":[],"status_note":"Described as basically unaltered and in good condition overall, but deteriorated in parts from rain, erosion and neglect; the surviving parcel is about ten acres, reduced from the original.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:32.31946-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/77000293.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/77000293/61a84981a8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/77000293/61a84981a8-1600.webp","licence":"CC BY-SA 3.0","author":"R&amp;sbwn","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Forestiere_Underground_Gardens.JPG\" rel=\"noopener\">R&amp;amp;sbwn</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Forestiere_Underground_Gardens.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123858644","wikipedia":"https://en.wikipedia.org/wiki/Forestiere_Underground_Gardens","wikidata":"https://www.wikidata.org/wiki/Q5469244"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/fresno-county/forestiere-underground-gardens-77000293/"}