Wildlife & Nature
Thailand is a biodiversity hotspot sitting at the junction of three major biogeographical zones — the Indo-Burmese, Sundaland, and Indo-Chinese — giving the country an extraordinary richness of flora and fauna. With over 100 national parks and wildlife sanctuaries covering nearly one-fifth of the country's land area, Thailand offers remarkable wildlife experiences: from rainforest elephant encounters and jungle gibbon calls at dawn to rare bird sightings on the country's highest peak and bioluminescent plankton on remote beaches.
Khao Yai National Park
Khao Yai is one of Thailand's most celebrated and biodiverse national parks, and was the first national park established in Thailand (1962). In 2005, it became part of the Dong Phayayen–Khao Yai Forest Complex, inscribed as a UNESCO World Heritage Site. The park lies on the Khorat Plateau escarpment and protects a vast tract of evergreen and mixed deciduous forest sheltering an impressive array of large mammals, birds, and reptiles. Khao Yai is one of the last places in Thailand with a healthy wild elephant population, and its dense forests echo at night with the calls of hornbills, gibbons, and sambar deer. Several large waterfalls — including the spectacular Haew Narok — are among the park's most celebrated attractions.
Doi Inthanon National Park
Doi Inthanon National Park is home to Thailand's highest peak — Doi Inthanon at 2,565 meters — earning it the nickname 'The Roof of Thailand.' The park's dramatic elevation gradient supports a remarkable variety of ecosystems, from tropical rainforest at lower elevations through montane forests to rare high-altitude cloud forest at the summit. This range of habitats makes Doi Inthanon one of Asia's premier birdwatching destinations, with over 400 bird species recorded — including the endemic Doi Inthanon subspecies of the green-tailed sunbird and a concentration of rare Asian specialties. The park also features stunning waterfalls, Royal twin chedis (pagodas) built in honor of the King and Queen, and beautiful flower gardens in the cool mountain air.
Khao Sok National Park
Khao Sok National Park contains some of the oldest evergreen rainforest in the world — an ancient ecosystem estimated to be over 160 million years old, pre-dating the Amazon and Congo rainforests. The park's interior is a landscape of dramatic limestone karst peaks, dense jungle, underground rivers, and the stunning Cheow Larn Lake (Ratchaprapha Reservoir) — a vast turquoise lake dotted with towering karst islands and accessible by boat. Khao Sok is one of the most pristine and biodiverse areas in Thailand, with particularly high biodiversity supported by year-round rainfall averaging over 3,500mm. Overnight stays in floating bungalows on Cheow Larn Lake, surrounded by mist-draped limestone cliffs reflected in glassy water, are among the most memorable experiences in all of Thailand.
Erawan National Park
Erawan National Park is named after the mythical three-headed white elephant of Hindu-Buddhist legend, and the shape of the top tier of the park's famous waterfall is said to resemble its head. The centerpiece of the park is the extraordinary Erawan Waterfall — a series of seven tiered emerald-green pools and cascades descending through the jungle, each with its own character and each perfect for swimming. The pools' vivid turquoise color is caused by minerals dissolved from the limestone bedrock. Fish nibble at bathers' feet in the lower pools, while the upper tiers require a short jungle hike. Beyond the waterfall, the park contains dense dipterocarp forest, several caves including the impressive Phra That Cave with ancient human skeletal remains, and excellent birdwatching.
Kaeng Krachan National Park
Kaeng Krachan is Thailand's largest national park, inscribed as a UNESCO World Heritage Site in 2021. It lies on the Myanmar border and its vast contiguous forest forms part of the Tenasserim Hills biodiversity corridor. The park protects a remarkable diversity of habitats — from lowland forests and bamboo groves along its large reservoir, to montane forest on the highest ridges. Kaeng Krachan is perhaps most celebrated among birdwatchers: over 400 bird species have been recorded, including a substantial population of the globally endangered Gurney's pitta. Wild Asian elephants roam throughout the park in significant numbers, and early morning drives along the park's main road frequently encounter herds. Leopards, clouded leopards, and the elusive Indochinese tiger are also present, along with a rich assemblage of hornbills, raptors, and kingfishers.