On the riverbanks of the Daugava in Riga rests the Castle of Light, a striking Latvian landmark that houses the National Library of Latvia. Despite its nickname, the building is not a crumbling stone fortress, but rather a mountainous looking structure with a reflective surface, rising 68 meters above the river. However, the Castle of Light holds more than just an abundance of books and knowledge. It holds its own against the harsh Baltic climate.