Khao Sam Lan is a national park that's found in the province of Saraburi – one of the least visited and populated regions in Thailand. The landscape here is dominated by towering mountains, rolling valleys, and large stretches of forests in between – simply put, it's a hiker's paradise. The highest peak here is around 330 metres and the view from up there is absolutely mesmerizing. On the way up, keep your eyes peeled for the elusive denizens of the forests. Large troops of monkeys and flocks of endemic birds are common here.