7. Nepal

According to travelers, you can trek to Annapurna Base Camp in the Himalayas for around just $20 a day. Yes, you read the right. While it might cost you a pretty penny to reach Nepal, once you’re there, it’s one of the world's cheapest places for mountain trekking, whether you opt to go independently or with a guide.
Remember, when you’re picking your next destination - money will return, time won’t. Travel while you can.