{"version":"1.0","type":"card","id":"16abb796-4192-498c-b5a9-975716f866e1","url":"https://stacklist.com/card/16abb796-4192-498c-b5a9-975716f866e1","title":"Castillo de San Marcos National Monument","source_url":"https://www.nps.gov/casa/index.htm","note":"The oldest masonry fort in the continental U.S., run by the National Park Service in the heart of St. Augustine's historic district, an easy add-on to a World Golf Village-area day trip. \n","image":{"url":"https://ucarecdn.com/14abbf6d-212b-4859-9190-172171e8447d/","alt":"Castillo de San Marcos National Monument","width":4034,"height":2017},"stack":{"id":"193cf6e1-2c91-40f2-b54f-49722220b7d8","title":"Family-Friendly Things to Do Across Northeast Florida","url":"https://stacklist.com/c/parenting/stack/193cf6e1-2c91-40f2-b54f-49722220b7d8"},"created_at":"2026-07-15T05:45:35.811Z","updated_at":null,"aco":{"summary":"Casa Grande Ruins National Monument is a U.S. National Park Service site featuring the historic Castillo de San Marcos in Saint Augustine, Florida, offering visitors educational resources, cultural exhibits, and information about its rich history and archeological significance. The park provides operating hours, entrance fees, accessibility information, and various programs including field trips, videos, and special events for public engagement.","tags":["national-monument","castillo-de-san-marcos","florida","cultural-heritage","archeology","tourism","nps"],"key_entities":[{"name":"Casa Grande Ruins National Monument","type":"location","confidence":0.95},{"name":"Castillo de San Marcos","type":"location","confidence":0.95},{"name":"Saint Augustine, FL","type":"location","confidence":0.95},{"name":"Fort Matanzas","type":"location","confidence":0.85},{"name":"National Park Service","type":"organization","confidence":0.95},{"name":"Cultural Landscapes","type":"concept","confidence":0.8},{"name":"Archeology","type":"concept","confidence":0.85}],"classification":"reference","language":"en","confidence":0.85,"provenance":{"model":"claude-haiku-4-5","tool":"@stacklist/be@0.1.0","confidence":0.85,"timestamp":"2026-07-08T14:31:16.909Z"},"token_counts":{"approximate":468,"cl100k":357},"content_hash":"sha256:967714ade64271f589b0cb09543ddb17dc846130dcda8353c5db0be800b401a1","acp_version":"0.2","body_available":true,"body_tokens":468,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/16abb796-4192-498c-b5a9-975716f866e1.json","html":"https://stacklist.com/card/16abb796-4192-498c-b5a9-975716f866e1","md":"/api/public/card/16abb796-4192-498c-b5a9-975716f866e1.md","stack_json":"/api/public/stack/193cf6e1-2c91-40f2-b54f-49722220b7d8.json"}}