Travelers headed to Costa Rica must put the Arenal Volcano on their lists. Its presence alone is stunning; the volcano measures nearly a mile into the sky. To the delight of visitors, this volcano actively sputters smoke, lava, and ash regularly until 2010. While the volcano is currently resting, you can still enjoy a wide variety of recreational activities here. Hiking tours though the volcano’s rainforest reveal the wild beauty of the jungle. You can go white water rafting on the area’s rivers. Those who are more adventurous would enjoy the grappling tours through the rainforest canopy.