25 of the World’s Most Beautiful Caves

Waitomo Caves, New Zealand

If you catch yourself looking for the Big Dipper inside this vast grotto, you’re not alone. But what may look like a starry night sky in this cave is actually thousands of glow worms hanging from threads of their own silk, similar to strings of Mardi Gras beads. For what purpose? Just to casually attract and trap flying insects in their silky snares. Imagine what it would be like to fall asleep gazing at this stunning sight!