Night tours in Costa Rica are considered one of the most authentic eco-adventures available because they reveal the rainforest’s nocturnal world at a time when nearly 70% of wildlife becomes active, offering unmatched opportunities for learning, exploration, and photography. Guided by expert naturalists, visitors walk through carefully selected trails where the rainforest humidity, temperature, and lighting conditions are ideal for spotting frogs, insects, snakes, mammals, and birds that rarely appear during daytime excursions. Many travelers join night tours specifically to encounter iconic species such as the red-eyed tree frog, glass frogs, emerald basilisk lizards, vine snakes, pit vipers, and various tarantulas, all of which play essential roles in the ecosystem and display their most interesting behaviors at night. Night tours also allow guests to observe mammals like kinkajous, opossums, armadillos, porcupines, coatis, and night-active monkeys that move quietly through the canopy and forest floor, offering glimpses of natural behaviors not seen during daylight hours. Naturalist guides explain how nocturnal animals hunt, communicate, camouflage, and navigate the dense rainforest environment, highlighting ecological relationships, survival strategies, and the evolutionary traits that make nighttime species so fascinating. Many tours take place in renowned biodiversity hotspots such as Monteverde’s cloud forest, La Fortuna’s volcanic rainforest, Manuel Antonio’s coastal jungle, Tortuguero’s Caribbean wetlands, and the Osa Peninsula’s legendary wildlife reserves, giving travelers access to some of the richest nighttime ecosystems in the world. Night photography during these tours is particularly rewarding, as specialized lighting techniques and slow, deliberate movement allow photographers to capture rare species in natural poses without disturbing their behavior. The rainforest itself becomes a sensory experience at night, with a chorus of frogs, insects, and birds echoing through the vegetation, while fireflies and bioluminescent fungi illuminate small sections of the forest floor like a natural light show. Responsible tour operators emphasize safety and environmental respect by using filtered lights, limiting direct contact, maintaining quiet areas, and following strict wildlife-viewing guidelines that protect sensitive species and their habitats. Experiencing a night tour in Costa Rica gives travelers an entirely new appreciation for the rainforest, offering an intimate, exciting, and educational adventure that becomes one of the most memorable highlights of any Costa Rican vacation.