If you've always dreamed of living in a unique and energy-efficient underground home, you may be ecstatic to finally be taking the plunge -- literally. However, building an underground home can pose some challenges that aren't present with more traditional homes, particularly when it comes to installing windows (often the only part of your home with above-ground views). What are the best window options for your underground home? Read on to learn more about the factors you'll want to consider before making your new window installation selection.