As the days grow shorter, one might feel a strong urge to find a warm place indoors and cozy up to a good book. As much as our world hurtles toward digitized information, physical books remain popular, useful, and revered items. We share, use, collect, and read billions of books every year, and we house our most treasured ones in libraries, in some of the most remarkable architecture around the world. And for those who cannot access these amazing buildings, there are volunteers who fill the need as they can, creating mobile libraries to bring books to people in remote places. Today, a visual feast—glimpses of libraries big and small, new and old, from across the globe.