Rainforests.

A guided Kokoda trek runs USD $1,800 to $2,800 as of September 2026, and Varirata National Park gets you real rainforest an hour from Port Moresby with no permit needed.

Costa Rica packs more biodiversity per square mile than almost anywhere on Earth, and its forests are where you'll witness nature's most spectacular show. You'll find yourself walking through ancient rainforests where over 500,000 species call home...