Thrilling Outdoor Adventures That Are Surprisingly Budget-Friendly

6. Exploring Glowworm Caves or Bioluminescent Waters

Nature has some otherworldly light shows, and they often cost little to nothing to experience. Glowworm caves in New Zealand, bioluminescent bays in Puerto Rico and Florida, and even firefly-filled forests in Japan offer magical nighttime adventures. Many of these destinations don’t require expensive boat tours—you can rent a kayak, hike, or even swim through them yourself. Watching thousands of tiny organisms illuminate the water as you move through it is a surreal, unforgettable experience that feels like stepping into a fantasy world.