Huai Kha Khaeng Wildlife Sanctuary was created in 1972.

The area of Huai Kha Khaeng Wildlife Sanctuary is 2,574.64 square kilometers.

Thailand has 5 World Heritage sites in Thailand; 3 cultural and 2 natural properties.

The cultural sites are:

- Ban Chiang Archaeological site

- Historic City of Ayutthaya

- Historic Town of Sukhothai and Associated Historic Towns

The natural sites are:

- Dong Phayayan-Khao Yai Forest Complex

- Thungyai-Huai Kha Khaeng Wildlife Sanctuaries

because its a wildlife sanctuary

Mengame Gorilla Sanctuary Wildlife Sanctuary was created in 2001.