• Guanacaste Falls 3 falls Tallest: La Leona, ~50m Emerald waters: Yes — Oropendola & La Leona's turquoise volcanic pools Wildlife: Howler & white-faced monkeys, coatis, 300+ bird species From airport: ~31 km from Liberia (LIR) Access: Mixed — easy walks to guided-only (La Leona) View on map →
• Arenal & La Fortuna 2 falls Tallest: La Fortuna Waterfall, ~70–75m Emerald waters: Yes — Rio Celeste's famous turquoise river Wildlife: Toucans, sloths, howler monkeys around Arenal Volcano From airport: ~93 km from San Jose (SJO) Access: Moderate hikes, self-guided — no tour required View on map →
• Bajos del Toro 4 falls Tallest: Catarata del Toro, ~90m Emerald waters: Yes — Blue Falls' mineral-blue pools Wildlife: Hummingbirds, blue morpho butterflies, cloud-forest birds From airport: ~28 km from San Jose (SJO) Access: Mixed — trails to guided-only canyoning (Blue Falls, Gata Media) View on map →
• Central Valley 3 falls Tallest: Bijagual, ~328m — 2nd-highest in Costa Rica Emerald waters: Not a defining feature here Wildlife: Scarlet macaws, capuchin monkeys, toucans, blue morphos From airport: ~16 km from San Jose (SJO) Access: Mixed — easy garden paths to guided-only trek (Bijagual) View on map →
• South Pacific 3 falls Tallest: Diamante Waterfall, ~200m Emerald waters: Not a defining feature here Wildlife: Scarlet macaws, toucans, hummingbirds From airport: ~40 km from Quepos (XQP) Access: Mixed — easy walk to guided-only advanced hike (Diamante) View on map →
• Nicoya Peninsula 1 fall Tallest: Montezuma Waterfalls, ~40m total (3 tiers) Emerald waters: Not a defining feature here Wildlife: Capuchin monkeys, coatis, coastal dry-forest birds From airport: ~12 km from Tambor (TMU) Access: Moderate hike, self-guided — swimming required between tiers View on map →
• Caribbean Soon Guides for this region are in progress.

The interactive map below shows exactly where each of these waterfalls sits, along with airports and volcanoes nearby.