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  1. Crystal Cave (Ohio) - Wikipedia

    As of 2016, the Crystal Cave is open for tourism, where celestine crystals of up to 3 feet (1 m) in width can be viewed. The crystals form extensive linings on the limestone walls of the 30-foot …

  2. Crystal Cave Put-in-Bay | See The World's Largest Geode

    Discovered in 1897 entirely by accident, this natural wonder lies hidden beneath the very vineyard that has produced some of Ohio’s finest sweet wines for generations. While digging a well, …

  3. Crystal Cave - Put in Bay Caves

    The Crystal Cave is located about a mile from downtown Put-in-Bay. Nearby attractions include Perry’s Cave and Family Fun Center, the Chocolate Cafe and Museum, and Saunders Golf …

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  4. Crystal Cave | Worlds Largest Underground Geode | Map ...

    Crystal Cave located at Put-in-Bay Ohio is the worlds largest underground geode. Tours, Gift Shop & is located just three blocks from the Put-in-Bay Resort.

  5. Step Inside the World’s Largest Geode At Put-in-Bay’s Crystal ...

    Jun 4, 2025 · Welcome to Crystal Cave, the world’s largest known geode, and one of Ohio’s most unexpectedly magical destinations. Back in 1897, workers at Heineman Winery were digging a …

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  6. Stand Inside The World's Largest Geode At This Ethereal And ...

    Oct 13, 2024 · The world's largest geode is Crystal Cave, a family-friendly Ohio destination near Heineman's Winery in Put-in-Bay on South Bass Island in Lake Erie.

  7. Crystal Cave in Put-in-Bay | Atlas Obscura

    Take a drunken tour inside the world's largest known geode. The difference between Ohio’s crystal cave and other, more mundane varieties may not be apparent—at first. But in the …