The next time you visit a destination, it may not be about the natural beauty you see outside, but what you get to see if you spend a few hours underground.

Here are some of the best.

Aspiring spelunkers may be interested to know that you can have a caving experience that’s much more than gazing at stalagmites and stalactites.

These underground worlds offer adventure activities, up-close views of cave-dwelling animals, and other surprises.

In New Zealand, you can take a guided float tour down the creek inside the Waitomo Glowworm Caves and check out millions of tiny bioluminescent creatures.

Or you can take a boat check out the similar Blue Grotto in Capri, which also offers singing Dean Martin impersonators among its more natural attractions.

Or you can go black water rafting in the Central American country of Belize, where you can literally tube your way through the caves.

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