5. Forest Kindergartens.
Who says you need walls to learn? Heck, who needs a building at all? Forest kindergartens, a concept popularized in Europe, are schools for 3-6 year olds that take place almost entirely outdoors. Kids in regular kindergartens play on the monkey bars; kids in forest kindergarten climb trees. Rain or shine, snow or rain, heat or cold, these kids are out exploring and interacting with their environment.