Arenal may be Costa Rica's most famous volcano, but you can peer right into the crater here at Poás—from the vantage point of an observation platform. That gives it an edge in the "cool volcano visit" department.

- Photo: Styve Reineck / Shutterstock
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Arenal may be Costa Rica's most famous volcano, but you can peer right into the crater here at Poás—from the vantage point of an observation platform. That gives it an edge in the "cool volcano visit" department.