Tashigang displays a very different side of Bhutan—it's surrounded by barley, rice and wheat fields, as well as tropical-fruit orchards. The best time to visit is October-April: You'll avoid the leeches, mosquitoes and landslides. Although one night is enough to see everything, allow two or three because the area is so remote and unusual. Be sure to visit the hidden valley of Tashiyangtse. There are festivals in mid-March to early April and late November-December.