Costa Rica

Costa Rica has no military (abolished in 1948), consistent democracy, and the happiest population in the Western Hemisphere according to the Happy Planet Index. For solo travelers, this translates to genuine safety and warmth. The country packs volcanos, cloud forests, Caribbean and Pacific beaches, and wildlife (sloths, toucans, monkeys) into an area smaller than West Virginia. Monteverde, Arenal, and Manuel Antonio are well-traveled routes with organized tours that solo travelers can join daily. Surfing lessons in Santa Teresa cost $40. Zip-lining through the canopy: $50.