Udon Thani was one of the biggest US air bases during the Vietnam War, and it is now home to one of Thailand's largest expat populations. As such, the city offers plenty of Western amenities, but most of the area's best attractions require a day trip into the surrounding countryside. The Bronze Age excavations at Ban Chiang are the most visited site in the area, but there are plenty of other fascinating sights as well, including the silk-weaving village of Ban Nak Ha, a large orchid farm, and the mysterious sandstone rock formations found in Phu Phrabat National Park.

Phuket Ao Phang Nga National Park Bangkok Chiang Mai Chiang Rai Doi Inthanon National Park Erawan National Park Hat Yai Hua Hin Huai Kha Khaeng Wild Life Sanctuary Karon Khao Sok National Park Khao Yai National Park Ko Pha Ngan Ko Samet Koh Samui Ko Tao Koh Chang Krabi Lampang Mae Hong Son Pai Pattaya Phu Khieo Wildlife Sanctuary Udon Thani

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