{"version":"1.0","type":"card","id":"64bb0112-a13b-4d6f-ab54-066c737ac956","url":"https://stacklist.com/card/64bb0112-a13b-4d6f-ab54-066c737ac956","title":"9 Underground Cities in Europe","source_url":"https://yourlifestylelibrary.com/underground-cities-in-europe/","note":"Walking the cobbled streets of Europe's historic towns, you rarely think about what lies beneath your feet. This page explores nine fascinating underground cities in Europe, revealing their history and the mysteries they hold.","image":{"url":"https://ucarecdn.com/0118f202-44c8-4d64-9a17-53b87b684b21/","alt":"9 Underground Cities in Europe","width":1200,"height":630},"stack":{"id":"992137bf-d2a1-42fd-ada5-39fb6bcefb92","title":"Wanderlust & Wisdom: Affordable Adventures and Expat Dreams","url":"https://stacklist.com/c/travel/stack/992137bf-d2a1-42fd-ada5-39fb6bcefb92"},"created_at":"2026-02-17T08:36:36.289Z","updated_at":null,"aco":null,"_links":{"self":"/api/public/card/64bb0112-a13b-4d6f-ab54-066c737ac956.json","html":"https://stacklist.com/card/64bb0112-a13b-4d6f-ab54-066c737ac956","md":"/api/public/card/64bb0112-a13b-4d6f-ab54-066c737ac956.md","stack_json":"/api/public/stack/992137bf-d2a1-42fd-ada5-39fb6bcefb92.json"}}