Greenhouses, or small garden structures, are tasteful additions that add character to your outdoor spaces. These small structures are great for plant storage, tool storage and even a personalized outdoor escape. To ease the process, these structures can be purchased from companies such as Hillbrook Collections, pre-built and delivered right to your yard. For homeowners looking to take a more hands-on approach, these sheds can also be built by hand for complete customization or can be transformed from a standard shed from a local garden center into the hideaway of your dreams.