The world's best gardens are a balanced partnership between humans and Mother Nature. Even people who aren't gardening enthusiasts will appreciate the creatively designed landscapes and plant-filled spaces. But garden-going is a seasonal activity in most regions of the world. Snow, colder temperatures, rain (or lack thereof) and other weather can drastically alter a garden's appearance.
Indoor gardens — from state-of-the-art biodomes (like the pictured Eden Project) to classic conservatories — can make garden-strolling a year-round sport. Not only can these covered spaces be a great cure for the mid-winter blues, but the controlled climate is a place where non-native plants can thrive. Choose a greenhouse with a diverse list of ecosystems and you can take a horticultural trip around the world without even stepping outside.