From Bangkok: Khao Yai UNESCO Park Full Day with Entrance Fee
Escape Bangkok and spend a full day in Khao Yai — Thailand's first UNESCO World Heritage National Park and one of Asia's last intact tropical forests. Hike the Nong Phak Chi Nature Trail through dense jungle with real chances to spot wild elephants, gibbons, hornbills, and macaques. Visit the stunning Haew Suwat Waterfall, roam freely at Lam Ta Khong Campground where deer appear year-round, and trek to Haew Narok — the park's tallest three-tiered waterfall. Travel in a small group of max 9 guests with a Professional Park Ranger guide. National Park entrance fee (THB 400) fully included — nothing extra to pay at the gate. Free hotel pickup for guests in Bangkok Downtown, Khao San Road, Sathorn, Pratunam & Wireless Road. Meeting point option also available for last-minute bookings.
Prices may vary slightly on the provider's site — you could get an extra discount at checkout.