- *Pulpí Geode* in Spain - This is one of the largest crystal caves in the world and the largest accessible geode ever discovered ¹.
- *Cayman Crystal Caves* in the Cayman Islands - These caves feature stunning stalactite and stalagmite crystal formations that are still evolving after millions of years ¹.
- *Crystal Cave* in Bermuda - Home to spectacular white limestone crystal stalactites and stalagmites that dangle from the cave ceiling ¹.
- *Giant's Causeway* in Northern Ireland - A natural wonder featuring over 40,000 basalt hexagonal columns ².
- *Uluru* (also known as Ayers Rock) in Australia - A 550-million-year-old isolated rock of arkosic sand
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